Ukraine

The name of Ukraine is frequently interpreted as coming from the old Slavic term for 'borderland' as is the word krajina.

Another interpretation is that the name of Ukraine means "region" or "country".

In the English-speaking world during most of the 20th century, Ukraine (whether independent or not) was referred to as "the Ukraine". This is because in Russian, the word ukraina means 'borderland' so the definite article would be natural in the English language; this is similar to Nederlanden, which means 'low lands' and is rendered in English as "the Netherlands". However, since Ukraine's declaration of independence in 1991, this usage has become politicised and more rare, and style guides advise against its use. U.S. ambassador William Taylor said that using "the Ukraine" implies disregard for Ukrainian sovereignty. The official Ukrainian position is that "the Ukraine" is both grammatically and politically incorrect.

=== Early history ===

Evidence for the earliest securely dated hominin presence in Europe comes from 1.4 million-year-old stone tools from Korolevo, in western Ukraine. Settlement by modern humans in Ukraine and its vicinity dates back to 32,000 BC, with evidence of the Gravettian culture in the Crimean Mountains. By 4,500 BC, the Neolithic Cucuteni–Trypillia culture was flourishing in wide areas of modern Ukraine, including Trypillia and the entire Dnieper-Dniester region. Ukraine is a probable location for the first domestication of the horse. The Kurgan hypothesis places the Volga-Dnieper region of Ukraine and southern Russia as the linguistic homeland of the Proto-Indo-Europeans. Early Indo-European migrations from the Pontic steppes in the 3rd millennium BC spread Yamnaya Steppe pastoralist ancestry and Indo-European languages across large parts of Europe. During the Iron Age, the land was inhabited by Iranian-speaking Cimmerians, Scythians, and Sarmatians. Between 700 BC and 200 BC it was part of the Scythian kingdom.

From the 6th century BC, Greek, Roman, and Byzantine colonies were established on the north-eastern shore of the Black Sea, such as at Tyras, Olbia, and Chersonesus. These thrived into the 6th century AD. The Goths stayed in the area, but came under the sway of the Huns from the 370s. In the 7th century, the territory that is now eastern Ukraine was the centre of Old Great Bulgaria. At the end of the century, the majority of Bulgar tribes migrated in different directions, and the Khazars took over much of the land.

In the 5th and 6th centuries, the Antes, which some relate as an early Slavic people, lived in Ukraine. Migrations from the territories of present-day Ukraine throughout the Balkans established many South Slavic nations. Northern migrations, reaching almost to Lake Ilmen, led to the emergence of the Ilmen Slavs and Krivichs. Following an Avar raid in 602 and the collapse of the Antes Union, most of these peoples survived as separate tribes until the beginning of the second millennium.

The establishment of the state of Kievan Rus' remains obscure and uncertain. The state included much of present-day Ukraine, Belarus and the western part of European Russia. According to the Primary Chronicle, the Rus' people initially consisted of Varangians from Scandinavia. In 882, the pagan Prince Oleg (Oleh) conquered Kyiv from Askold and Dir and proclaimed it as the new capital of the Rus'. Anti-Normanist historians however argue that the East Slavic tribes along the southern parts of the Dnieper River were already in the process of forming a state independently. The Varangian elite, including the ruling Rurik dynasty, later assimilated into the Slavic population. Kievan Rus' was composed of several principalities ruled by the interrelated Rurikid kniazes ("princes"), who often fought each other for possession of Kyiv.

During the 10th and 11th centuries, Kievan Rus' became the largest and most powerful state in Europe, a period known as its Golden Age. It began with the reign of Vladimir the Great (980–1015), who introduced Christianity. During the reign of his son, Yaroslav the Wise (1019–1054), Kievan Rus' reached the zenith of its cultural development and military power. The state soon fragmented as the relative importance of regional powers rose again. After a final resurgence under the rule of Vladimir II Monomakh (1113–1125) and his son Mstislav (1125–1132), Kievan Rus' finally disintegrated into separate principalities following Mstislav's death, though ownership of Kyiv would still carry great prestige for decades. In the 11th and 12th centuries, the nomadic confederacy of the Turkic-speaking Cumans and Kipchaks was the dominant force in the Pontic steppe north of the Black Sea.

The Mongol invasions in the mid-13th century devastated Kievan Rus'; following the Siege of Kyiv in 1240, the city was destroyed by the Mongols. In the western territories, the principalities of Halych and Volhynia had arisen earlier, and were merged to form the Principality of Galicia–Volhynia. Daniel of Galicia, son of Roman the Great, re-united much of south-western Rus', including Volhynia, Galicia, as well as Kyiv. He was subsequently crowned by a papal envoy as the first king of Galicia–Volhynia (also known as the Kingdom of Ruthenia) in 1253.

In 1349, in the aftermath of the Galicia–Volhynia Wars, the region was partitioned between the Kingdom of Poland and the Grand Duchy of Lithuania. From the mid-13th century to the late 1400s, the Republic of Genoa founded numerous colonies on the northern coast of the Black Sea and transformed these into large commercial centres headed by the consul, a representative of the Republic. In 1430, the region of Podolia was incorporated into Poland, and the lands of modern-day Ukraine became increasingly settled by Poles. In 1441, Genghisid prince Haci I Giray founded the Crimean Khanate on the Crimean Peninsula and the surrounding steppes; the Khanate orchestrated Tatar slave raids. Over the next three centuries, the Crimean slave trade would enslave an estimated two million in the region.

In 1569, the Union of Lublin established the Polish–Lithuanian Commonwealth, and most of the Ukrainian lands were transferred from Lithuania to the Crown of the Kingdom of Poland, becoming de jure Polish territory. Under the pressures of Polonisation, many landed gentry of Ruthenia converted to Catholicism and joined the circles of the Polish nobility; others joined the newly created Ruthenian Uniate Church.

Deprived of native protectors among the Ruthenian nobility, the peasants and townspeople began turning for protection to the emerging Zaporozhian Cossacks. In the mid-17th century, a Cossack military quasi-state, the Zaporozhian Host, was formed by Dnieper Cossacks and Ruthenian peasants. Poland exercised little real control over this population, but found the Cossacks to be useful against the Turks and Tatars, and at times the two were allies in military campaigns. However, the continued harsh enserfment of Ruthenian peasantry by Polish szlachta (many of whom were Polonised Ruthenian nobles) and the suppression of the Orthodox Church alienated the Cossacks. The latter did not shy from taking up arms against those they perceived as enemies and occupiers, including the Catholic Church with its local representatives.

In 1648, Bohdan Khmelnytsky led the largest of the Cossack uprisings against the Commonwealth and the Polish king, which enjoyed wide support from the local population. Khmelnytsky founded the Cossack Hetmanate, which existed until 1764 (some sources claim until 1782). After Khmelnytsky suffered a crushing defeat at the Battle of Berestechko in 1651, he turned to the Russian tsar for help. In 1654, Khmelnytsky was subject to the Pereiaslav Agreement, forming a military and political alliance with Russia that acknowledged loyalty to the Russian monarch.

After his death, the Hetmanate went through a devastating 30-year war amongst Russia, Poland, the Crimean Khanate, the Ottoman Empire, and Cossacks, known as "The Ruin" (1657–1686), for control of the Cossack Hetmanate. The Treaty of Perpetual Peace between Russia and Poland in 1686 divided the lands of the Cossack Hetmanate between them, reducing the portion over which Poland had claimed sovereignty to Ukraine west of the Dnieper river. In 1686, the Metropolitanate of Kyiv was annexed by the Moscow Patriarchate through a synodal letter of the Ecumenical Patriarch of Constantinople Dionysius IV, thus placing the Metropolitanate of Kyiv under the authority of Moscow. An attempt to reverse the decline was undertaken by Cossack Hetman Ivan Mazepa (1639–1709), who ultimately defected to the Swedes in the Great Northern War (1700–1721) in a bid to get rid of Russian dependence, but Hetmanate's capital city Baturyn was sacked (1708) and they were crushed in the Battle of Poltava (1709).

The Hetmanate's autonomy was severely restricted since Poltava. In the years 1764–1781, Catherine the Great incorporated much of Central Ukraine into the Russian Empire, abolishing the Cossack Hetmanate and the Zaporozhian Sich, and was one of the people responsible for the suppression of the last major Cossack uprising, the Koliivshchyna. After the annexation of Crimea by Russia in 1783, the newly acquired lands, now called Novorossiya, were opened up to settlement by Russians. The tsarist autocracy established a policy of Russification, suppressing the use of the Ukrainian language and curtailing the Ukrainian national identity. The western part of present-day Ukraine was subsequently split between Russia and Habsburg-ruled Austria after the fall of the Polish–Lithuanian Commonwealth in 1795.

The 19th century saw the rise of Ukrainian nationalism. With growing urbanisation and modernisation and a cultural trend toward romantic nationalism, a Ukrainian intelligentsia committed to national rebirth and social justice emerged. The serf-turned-national-poet Taras Shevchenko (1814–1861) and political theorist Mykhailo Drahomanov (1841–1895) led the growing nationalist movement. While conditions for its development in Austrian Galicia under the Habsburgs were relatively lenient, the Russian part (historically known as "Little Russia" or "South Russia") faced severe restrictions, going as far as banning virtually all books from being published in Ukrainian in 1876.

Ukraine, like the rest of the Russian Empire, joined the Industrial Revolution later than most of Western Europe due to the maintenance of serfdom until 1861. Other than near the newly discovered coal fields of the Donbas, and in some larger cities such as Odesa and Kyiv, Ukraine largely remained an agricultural and resource extraction economy. The Austrian part of Ukraine was particularly destitute, which forced hundreds of thousands of peasants into emigration, who created the backbone of an extensive Ukrainian diaspora in countries such as Canada, the United States and Brazil. Some of the Ukrainians settled in the Far East, too. According to the 1897 census, there were 223,000 ethnic Ukrainians in Siberia and 102,000 in Central Asia. An additional 1.6 million emigrated to the east in the ten years after the opening of the Trans-Siberian Railway in 1906. Far Eastern areas with an ethnic Ukrainian population became known as Green Ukraine.

Ukraine plunged into turmoil with the beginning of World War I, and fighting on Ukrainian soil persisted until late 1921. Initially, the Ukrainians were split between Austria-Hungary, fighting for the Central Powers, though the vast majority served in the Imperial Russian Army, which was part of the Triple Entente, under Russia. As the Russian Empire collapsed, the conflict evolved into the Ukrainian War of Independence, with Ukrainians fighting alongside, or against, the Red, White, Black and Green armies, with the Poles, Hungarians (in Transcarpathia), and Germans also intervening at various times.

An attempt to create an independent state, the left-leaning Ukrainian People's Republic (UPR), was first announced by Mykhailo Hrushevsky, but the period was plagued by an extremely unstable political and military environment. It was first deposed in a coup d'état led by Pavlo Skoropadskyi, which yielded the Ukrainian State under the German protectorate, and the attempt to restore the UPR under the Directorate ultimately failed as the Ukrainian army was regularly overrun by other forces. The short-lived West Ukrainian People's Republic and Hutsul Republic also failed to join the rest of Ukraine.

The result of the conflict was a partial victory for the Second Polish Republic, which annexed the Western Ukrainian provinces, as well as a larger-scale victory for the pro-Soviet forces, which succeeded in dislodging the remaining factions and eventually established the Ukrainian Soviet Socialist Republic (Soviet Ukraine). Meanwhile, modern-day Bukovina was occupied by Romania and Carpathian Ruthenia was admitted to Czechoslovakia as an autonomous region.

The conflict over Ukraine, a part of the broader Russian Civil War, devastated the whole of the former Russian Empire, including eastern and central Ukraine. The fighting left over 1.5 million people dead and hundreds of thousands homeless in the former Russian Empire's territory. Famine in 1921 further hit the eastern provinces.

During the inter-war period, in Poland, Marshal Józef Piłsudski sought Ukrainian support by offering local autonomy as a way to minimise Soviet influence in Poland's eastern Kresy region. However, this approach was abandoned after Piłsudski's death in 1935, due to continued unrest among the Ukrainian population, including assassinations of Polish government officials by the Organisation of Ukrainian Nationalists (OUN); with the Polish government responding by restricting rights of people who declared Ukrainian nationality. In consequence, the underground Ukrainian nationalist and militant movement, which arose in the 1920s gained wider support.

Meanwhile, the recently constituted Soviet Ukraine became one of the founding republics of the Soviet Union. During the 1920s, under the Ukrainisation policy pursued by the national Communist leadership of Mykola Skrypnyk, Soviet leadership at first encouraged a national renaissance in Ukrainian culture and language. Ukrainisation was part of the Soviet-wide policy of Korenisation (literally indigenisation), which was intended to promote the advancement of native peoples, their language and culture into the governance of their respective republics.

Around the same time, Soviet leader Vladimir Lenin instituted the New Economic Policy (NEP), which introduced a form of market socialism, allowing some private ownership of small and medium-sized productive enterprises, hoping to reconstruct the post-war Soviet Union that had been devastated by both WWI and later the civil war. The NEP was successful at restoring the formerly war-torn nation to pre-WWI levels of production and agricultural output by the mid-1920s, much of the latter based in Ukraine. These policies attracted many prominent former UNR figures, including former UNR leader Hrushevsky, to return to Soviet Ukraine, where they were accepted, and participated in the advancement of Ukrainian science and culture. In July 1922, arrests and deportations of Ukrainian intellectuals (e.g. university professors) began in Soviet Ukraine and continued throughout the 1920s.

This period was cut short when Joseph Stalin became the leader of the USSR following Lenin's death. Stalin did away with the NEP in what became known as the Great Break. Starting from the late 1920s and now with a centrally planned economy, Soviet Ukraine took part in an industrialisation scheme which quadrupled its industrial output during the 1930s.

Furthermore, Stalin sought to suppress Ukraine's aspirations for independence by taking severe measures to eliminate the Ukrainian peasantry and eradicate the nation's intellectual and cultural elite. As a consequence of Stalin's new policy, the Ukrainian peasantry suffered from the programme of collectivisation of agricultural crops. Collectivisation was part of the first five-year plan and was enforced by regular troops and the secret police known as Cheka. Those who resisted were arrested and deported to gulags and work camps. As members of the collective farms were sometimes not allowed to receive any grain until unrealistic quotas were met, millions starved to death in a famine known as the Holodomor or the "Great Famine", which was recognised by some countries as an act of genocide perpetrated by Joseph Stalin and other Soviet notables.

Following on the Russian Civil War and collectivisation, the Great Purge, while killing Stalin's perceived political enemies, resulted in a profound loss of a new generation of Ukrainian intelligentsia, known today as the Executed Renaissance.

Following the invasion of Poland in September 1939, German and Soviet troops divided the territory of Poland. Thus, Eastern Galicia and Volhynia with their Ukrainian population became part of Ukraine. For the first time in history, the nation was united. Further territorial gains were secured in 1940, when the Ukrainian SSR incorporated the northern and southern districts of Bessarabia, Northern Bukovina, and the Hertsa region from the territories the USSR forced Romania to cede, though it handed over the western part of the Moldavian Autonomous Soviet Socialist Republic to the newly created Moldavian SSR. These territorial gains of the USSR were internationally recognised by the Paris peace treaties of 1947.

German armies invaded the Soviet Union on 22 June 1941, initiating nearly four years of total war. The Axis initially advanced against desperate but unsuccessful efforts of the Red Army. In the battle of Kyiv, the city was acclaimed as a "Hero City", because of its fierce resistance. More than 600,000 Soviet soldiers (or one-quarter of the Soviet Western Front) were killed or taken captive there, with many suffering severe mistreatment. After its conquest, most of the Ukrainian SSR was organised within the Reichskommissariat Ukraine, with the intention of exploiting its resources and eventual German settlement. Some western Ukrainians, who had only joined the Soviet Union in 1939, hailed the Germans as liberators, but that did not last long as the Nazis made little attempt to exploit dissatisfaction with Stalinist policies. Instead, the Nazis preserved the collective-farm system, carried out genocidal policies against Jews, deported millions of people to work in Germany, and began a depopulation programme to prepare for German colonisation. They blockaded the transport of food on the Dnieper River.

Although the majority of Ukrainians fought in or alongside the Red Army and Soviet resistance, in Western Ukraine an independent Ukrainian Insurgent Army movement arose (UPA, 1942). It was created as the armed forces of the underground Organisation of Ukrainian Nationalists (OUN). Both organisations, the OUN and the UPA, supported the goal of an independent Ukrainian state on the territory with a Ukrainian ethnic majority. Although this brought conflict with Nazi Germany, at times the Melnyk wing of the OUN allied with the Nazi forces. From mid-1943 until the end of the war, the UPA carried out massacres of ethnic Poles in the Volhynia and Eastern Galicia regions, killing around 100,000 Polish civilians, which brought reprisals. These organised massacres were an attempt by the OUN to create a homogeneous Ukrainian state without a Polish minority living within its borders, and to prevent the post-war Polish state from asserting its sovereignty over areas that had been part of pre-war Poland. After the war, the UPA continued to fight the USSR until the 1950s. At the same time, the Ukrainian Liberation Army, another nationalist movement, fought alongside the Nazis.

In total, the number of ethnic Ukrainians who fought in the ranks of the Soviet Army is estimated from 4.5 million to 7 million; half of the Pro-Soviet partisan guerrilla resistance units, which counted up to 500,000 troops in 1944, were also Ukrainian. Generally, the Ukrainian Insurgent Army's figures are unreliable, with figures ranging anywhere from 15,000 to as many as 100,000 fighters.

The vast majority of the fighting in World War II took place on the Eastern Front. The total losses inflicted upon the Ukrainian population during the war are estimated at 6 million, including an estimated one and a half million Jews killed by the Einsatzgruppen, sometimes with the help of local collaborators. Of the estimated 8.6 million Soviet troop losses, 1.4 million were ethnic Ukrainians. The Victory Day is celebrated as one of eleven Ukrainian national holidays.

The republic was heavily damaged by the war, and it required significant efforts to recover. More than 700 cities and towns and 28,000 villages were destroyed. The situation was worsened by a famine in 1946–1947, which was caused by a drought and the wartime destruction of infrastructure, killing at least tens of thousands of people. In 1945, the Ukrainian SSR became one of the founding members of the United Nations (UN), part of a special agreement at the Yalta Conference, and, alongside Belarus, had voting rights in the UN even though they were not independent. Moreover, Ukraine once more expanded its borders as it annexed Zakarpattia, and the population became much more homogenised due to post-war population transfers, most of which, as in the case of Germans and Crimean Tatars, were forced. As of 1 January 1953, Ukrainians were second only to Russians among adult "special deportees", comprising 20% of the total.

Following the death of Stalin in 1953, Nikita Khrushchev became the new leader of the USSR, who began the policies of de-stalinisation and the Khrushchev Thaw. During his term as head of the Soviet Union, Crimea was transferred from the Russian SFSR to the Ukrainian SSR, formally as a friendship gift to Ukraine and for economic reasons. This represented the final extension of Ukrainian territory and formed the basis for the internationally recognised borders of Ukraine to this day. Many top positions in the Soviet Union were occupied by Ukrainians, including notably Leonid Brezhnev, General Secretary of the Communist Party of the Soviet Union from 1964 to 1982. However, it was he and his appointee in Ukraine, Volodymyr Shcherbytsky, who presided over the extensive Russification of Ukraine and who were instrumental in repressing a new generation of Ukrainian intellectuals known as the Sixtiers.

By 1950, the republic had fully surpassed pre-war levels of industry and production. Soviet Ukraine soon became a European leader in industrial production and an important centre of the Soviet arms industry and high-tech research, though heavy industry still had an outsided influence. The Soviet government invested in hydroelectric and nuclear power projects to cater to the energy demand that the development carried. On 26 April 1986, however, a reactor in the Chernobyl Nuclear Power Plant exploded, resulting in the Chernobyl disaster, the worst nuclear reactor accident in history.

Mikhail Gorbachev pursued a policy of limited liberalisation of public life, known as perestroika, and attempted to reform a stagnating economy. The latter failed, but the democratisation of the Soviet Union fuelled nationalist and separatist tendencies among the ethnic minorities, including Ukrainians. As part of the so-called parade of sovereignties, on 16 July 1990, the newly elected Supreme Soviet of the Ukrainian Soviet Socialist Republic adopted the Declaration of State Sovereignty of Ukraine. After a failed coup by some Communist leaders in Moscow at deposing Gorbachov, outright independence was proclaimed on 24 August 1991. It was approved by 92% of the Ukrainian electorate in a referendum on 1 December. Ukraine's new president, Leonid Kravchuk, went on to sign the Belavezha Accords and made Ukraine a founding member of the much looser Commonwealth of Independent States (CIS), though Ukraine never became a full member of the latter as it did not ratify the agreement founding CIS. These documents sealed the fate of the Soviet Union, which formally voted itself out of existence on 26 December.

Ukraine was initially viewed as having favourable economic conditions in comparison to the other regions of the Soviet Union, though it was one of the poorer Soviet republics by the time of the dissolution. However, during its transition to the market economy, the country experienced deeper economic slowdown than almost all of the other former Soviet Republics. During the recession, between 1991 and 1999, Ukraine lost 60% of its GDP and suffered from hyperinflation that peaked at 10,000% in 1993. The situation only stabilised well after the new currency, the hryvnia, fell sharply in late 1998 partially as a fallout from the Russian debt default earlier that year. The legacy of the economic policies of the nineties was the mass privatisation of state property that created a class of extremely powerful and rich individuals known as the oligarchs. The country then fell into a series of sharp recessions as a result of the Great Recession, the start of the Russo-Ukrainian War in 2014, and finally, the 2022 Russian invasion of Ukraine by Russia on 24 February 2022. Ukraine's economy in general underperformed since the time independence came due to pervasive corruption and mismanagement, which, particularly in the 1990s, led to protests and organised strikes. The war with Russia impeded meaningful economic recovery in the 2010s, while efforts to combat the COVID-19 pandemic, which arrived in 2020, were made much harder by low vaccination rates and, later in the pandemic, by the ongoing invasion.

From the political perspective, one of the defining features of the politics of Ukraine is that for most of the time, it has been divided along two issues: the relation between Ukraine, the West and Russia, and the classical left-right divide. The first two presidents, Kravchuk and Leonid Kuchma, tended to balance the competing visions of Ukraine, though Yushchenko and Yanukovych were generally pro-Western and pro-Russian, respectively. There were two major protests against Yanukovych: the Orange Revolution in 2004, when tens of thousands of people went in protest of election rigging in his favour (Yushchenko was eventually elected president), and another one in the winter of 2013/2014, when more gathered on the Euromaidan to oppose Yanukovych's refusal to sign the European Union–Ukraine Association Agreement. By the end of the protests on 21 February 2014, he fled from Ukraine and was removed by the parliament in what is termed the Revolution of Dignity, but Russia refused to recognise the interim pro-Western government, calling it a junta and denouncing the events as a coup d'état sponsored by the United States.

Despite the signing of the Budapest memorandum in 1994, in which Ukraine agreed to hand over nuclear weapons in exchange for guarantees of security and territorial integrity, Russia reacted violently to these developments and started a war against its western neighbour. In late February and early March 2014, it annexed Crimea using its Navy in Sevastopol as well as the so- called little green men; after this succeeded, it then launched a proxy war in the Donbas via the breakaway Donetsk People's Republic and Luhansk People's Republic. The first months of the conflict with the Russian-backed separatists were fluid, but Russian forces then started an open invasion in Donbas on 24 August 2014. Together they pushed back Ukrainian troops to the frontline established in February 2015, i.e. after Ukrainian troops withdrew from Debaltseve. It remained a frozen conflict until the early hours of 24 February 2022, when Russia launched the 2022 Russian invasion of Ukraine. A year later, Russian troops controlled about 17% of Ukraine's internationally recognised territory, which constitutes 94% of Luhansk Oblast, 73% of Kherson Oblast, 72% of Zaporizhzhia Oblast, 54% of Donetsk Oblast and all of Crimea, though Russia failed with its initial plan, with Ukrainian troops recapturing some territory in counteroffensives.

The military conflict with Russia shifted the government's policy towards the West. Shortly after Yanukovych fled Ukraine, the country signed the EU association agreement in June 2014, and its citizens were granted visa-free travel to the European Union three years later. In January 2019, the Orthodox Church of Ukraine was recognised as independent of Moscow, which reversed the 1686 decision of the patriarch of Constantinople and dealt a further blow to Moscow's influence in Ukraine. Finally, amid a full-scale war with Russia, Ukraine was granted candidate status to the European Union on 23 June 2022. A broad anti-corruption drive began in early 2023 with the resignations of several deputy ministers and regional heads during a reshuffle of the government.

Ukraine is the second-largest European country, after Russia, and the largest country entirely in Europe. Lying between latitudes 44° and 53° N, and longitudes 22° and 41° E., it is mostly in the East European Plain. Ukraine covers an area of 603,550 square kilometres (233,030 sq mi), with a coastline of 2,782 kilometres (1,729 mi).

The landscape of Ukraine consists mostly of fertile steppes (plains with few trees) and plateaus, crossed by rivers such as the Dnieper, Seversky Donets, Dniester and the Southern Bug as they flow south into the Black Sea and the smaller Sea of Azov. To the southwest, the Danube Delta forms the border with Romania. Ukraine's regions have diverse geographic features, ranging from the highlands to the lowlands. The country's only mountains are the Carpathian Mountains in the west, of which the highest is Hoverla at 2,061 metres (6,762 ft), and the Crimean Mountains, in the extreme south along the coast.

Ukraine also has a number of highland regions such as the Volyn-Podillia Upland (in the west) and the Near-Dnipro Upland (on the right bank of the Dnieper). To the east there are the south-western spurs of the Central Russian Upland over which runs the border with Russia. Near the Sea of Azov are the Donets Ridge and the Near Azov Upland. The snow melt from the mountains feeds the rivers and their waterfalls.

Significant natural resources in Ukraine include lithium, natural gas, kaolin, timber and an abundance of arable land. Ukraine has many environmental issues. Some regions lack adequate supplies of potable water. Air and water pollution affects the country, as well as deforestation, and radiation contamination in the northeast from the 1986 accident at the Chernobyl Nuclear Power Plant. The environmental damage caused by the 2022 Russian invasion of Ukraine has been described as an ecocide. Within its first year alone, the conflict inflicted an estimated $51 billion in environmental damage, resulting in severe toxic soil pollution and millions of tonnes of contaminated debris. These ecological crises were further compounded in June 2023 by the catastrophic destruction of the Kakhovka Dam.

Ukraine is in the mid-latitudes, and generally has a continental climate, except for its southern coasts, which have cold semi-arid and humid subtropical climates. Average annual temperatures range from 5.5–7 °C (41.9–44.6 °F) in the north, to 11–13 °C (51.8–55.4 °F) in the south. Precipitation is highest in the west and north and lowest in the east and southeast. Western Ukraine, particularly in the Carpathian Mountains, receives around 120 centimetres (47.2 in) of precipitation annually, while Crimea and the coastal areas of the Black Sea receive around 40 centimetres (15.7 in).

Water availability from the major river basins is expected to decrease due to climate change, especially in summer. This poses risks to the agricultural sector. The negative impacts of climate change on agriculture are mostly felt in the south of the country, which has a steppe climate. In the north, some crops may be able to benefit from a longer growing season. The World Bank has stated that Ukraine is highly vulnerable to climate change.

Ukraine contains six terrestrial ecoregions: Central European mixed forests, Crimean Submediterranean forest complex, East European forest steppe, Pannonian mixed forests, Carpathian montane conifer forests, and Pontic steppe. There is somewhat more coniferous than deciduous forest. The most densely forested area is Polisia in the northwest, with pine, oak, and birch. There are 45,000 species of animals (mostly invertebrates), with approximately 385 endangered species listed in the Red Data Book of Ukraine. Internationally important wetlands cover over 7,000 square kilometres (2,700 sq mi), with the Danube Delta being important for conservation.

Ukraine is a republic under a semi-presidential system with separate legislative, executive, and judicial branches.

The Constitution of Ukraine was adopted and ratified at the 5th session of the Verkhovna Rada, the parliament of Ukraine, on 28 June 1996. The constitution was passed with 315 ayes out of 450 votes possible (300 ayes minimum). All other laws and other normative legal acts of Ukraine must conform to the constitution. The right to amend the constitution through a special legislative procedure is vested exclusively in the parliament. The only body that may interpret the constitution and determine whether legislation conforms to it is the Constitutional Court of Ukraine. Since 1996, the public holiday Constitution Day is celebrated on 28 June. On 7 February 2019, the Verkhovna Rada voted to amend the constitution to state Ukraine's strategic objectives as joining the European Union and NATO.

The president is elected by popular vote for a five-year term and is the formal head of state.

Ukraine's legislative branch includes the 450-seat unicameral parliament, the Verkhovna Rada. The parliament is primarily responsible for the formation of the executive branch and the Cabinet of Ministers, headed by the prime minister. The president retains the authority to nominate the ministers of foreign affairs and of defence for parliamentary approval, as well as the power to appoint the prosecutor general and the head of the Security Service.

Laws, acts of the parliament and the cabinet, presidential decrees, and acts of the Crimean parliament may be abrogated by the Constitutional Court, should they be found to violate the constitution. Other normative acts are subject to judicial review. The Supreme Court is the main body in the system of courts of general jurisdiction.

Local self-government is officially guaranteed. Local councils and city mayors are popularly elected and exercise control over local budgets. The heads of regional and district administrations are appointed by the president in accordance with proposals of the prime minister.

The V-Dem Institute found ongoing democratic backsliding in Ukraine as of 2025 due to restrictions on freedom of speech and freedom of association.