Relations between Ukraine and the North Atlantic Treaty Organization (NATO) started in 1991 following Ukraine's independence after the dissolution of the Soviet Union. Ukraine first joined NATO's Partnership for Peace program in 1994, later joining the Planning and Review Process in 1997 and the NATO-Ukraine Commission in 1998. Although Ukraine initially declared neutrality and non-alignment with military blocs after independence, it later signaled interest in eventual NATO membership. After Russia's annexation of Crimea and support for separatist forces in eastern Ukraine in 2014, Ukraine began actively pursuing NATO membership, formally declaring it a strategic policy objective in 2017.
The Russo-Ukrainian War is an ongoing international conflict between Russia and Ukraine, which began in February 2014. Following Ukraine's Revolution of Dignity, Russia annexed Crimea from Ukraine and supported pro-Russian separatists fighting the Ukrainian military in the Donbas war. The first eight years of conflict also included naval incidents, cyberwarfare, and heightened political tensions. In February 2022, Russia launched a full-scale invasion of Ukraine and began occupying more of the country.
The war in Donbas, or Donbas war, was a phase of the Russo-Ukrainian War in the Donbas region of Ukraine. The war began 12 April 2014, when a fifty-man commando unit headed by Russian citizen Igor Girkin seized Sloviansk in Donetsk oblast. The Ukrainian military launched an operation against them. It continued until it was subsumed by the Russian invasion of Ukraine in February 2022.
Little green men are masked soldiers of the Russian Federation who appeared during the Russo-Ukrainian War in 2014 carrying weapons and equipment, but wearing unmarked green army uniforms.
Many states and international organisations reacted to the war in Donbas, a phase of the Russo-Ukrainian War that took place from 2014 to 2022 in the Donbas historical region in eastern Ukraine.
The Russian-occupied territories of Ukraine are areas of Ukraine that are currently controlled by Russia in the course of the Russo-Ukrainian War. In Ukrainian law, they are defined as the "temporarily occupied territories of Ukraine".
In March and April 2021, prior to the 2022 Russian invasion of Ukraine, the Russian Armed Forces began massing thousands of personnel and military equipment near Russia's border with Ukraine and in Crimea, representing the largest mobilisation since the illegal annexation of Crimea in 2014. This precipitated an international crisis due to concerns over a potential invasion. Satellite imagery showed movements of armour, missiles, and heavy weaponry towards the border. The troops were partially withdrawn by June 2021, though the infrastructure was left in place. A second build-up began in October 2021, this time with more soldiers and with deployments on new fronts; by December over 100,000 Russian troops were massed around Ukraine on three sides, including Belarus from the north and Crimea from the south. Despite the Russian military build-ups, Russian officials from November 2021 to 20 February 2022 repeatedly denied that Russia had plans to invade Ukraine.
Many states, international organizations, and civil society actors worldwide had expressed their reactions to the then-escalating crisis between Russia and Ukraine that started in March 2021. The crisis eventually culminated in a Russian invasion of Ukraine, beginning on 24 February 2022.
As part of the Russian invasion of Ukraine, the Russian state and state-controlled media have spread disinformation in an information war. Much of the news about military propaganda during Russia's invasion of Ukraine focused on Russian disinformation. Ukrainian media and politicians have also been accused of using propaganda and deception, although such efforts have been compared to the Russian disinformation campaign as more limited. Both Russia and Ukraine exaggerate the losses they claim to have inflicted on each other.
On 24 February 2022, Russia invaded Ukraine in an escalation of the Russo-Ukrainian War that started in 2014. The invasion became the largest attack on a European country since World War II. It is estimated to have caused tens of thousands of Ukrainian civilian casualties and hundreds of thousands of military casualties. By June 2022, Russian troops occupied about 20% of Ukrainian territory. From a population of 41 million in January 2022, about 8 million Ukrainians had been internally displaced and more than 8.2 million had fled the country by April 2023, creating Europe's largest refugee crisis since World War II. Extensive environmental damage caused by the war, widely described as an ecocide, contributed to food crises worldwide.
The Russian invasion of Ukraine received widespread international condemnation, leading to new sanctions being imposed on Russia, which triggered a Russian financial crisis. Reactions among governments have most often been negative, with criticism and condemnation, particularly in Europe, the Americas, and Southeast Asia.
Ukraine's easternmost oblasts, Donetsk, Luhansk, and Kharkiv, are the site of a theatre of operation in the ongoing Russian invasion of Ukraine.
"On conducting a special military operation" was a televised broadcast by Russian president Vladimir Putin on 24 February 2022, announcing the Russian invasion of Ukraine.
There have been several rounds of peace talks to halt Russia's 2022 invasion in Ukraine and end the Russo-Ukrainian War in an armistice. The first meeting was held four days after the start of the invasion, on 28 February 2022, in Belarus. It concluded without result, with delegations from both sides returning to their capitals for consultations. A second and third round of talks took place on 3 and 7 March 2022, on the Belarus–Ukraine border, in an undisclosed location in the Gomel region of Belarus. A fourth and fifth round of talks were respectively held on 10 and 14 March in Antalya, Turkey.
"Address concerning the events in Ukraine" was a televised address by Russian President Vladimir Putin on 21 February 2022, announcing that the Russian government would recognise the Ukrainian separatist regions of the Donetsk People's Republic and the Luhansk People's Republic as independent. During the speech, Putin also made a number of claims regarding Ukrainian history and Ukrainian domestic politics. The speech, which marked a significant escalation in the culminating Russo-Ukrainian crisis, was followed three days later by another speech declaring "a special military operation" in Ukraine—the Russian invasion of Ukraine.
The Zeitenwende speech was an address delivered to the Bundestag by Olaf Scholz, the Chancellor of Germany, on 27 February 2022. His speech was a reaction to the 2022 Russian invasion of Ukraine on 24 February. Scholz described the attack as a "historic turning point" and announced that in response his government would use a €100 billion fund to significantly increase military spending, reversing Germany's previously cautious defence policy.
On 30 September 2022, Russia, amid an ongoing invasion of Ukraine, unilaterally declared its annexation of areas in and around four Ukrainian oblasts—Donetsk, Kherson, Luhansk and Zaporizhzhia. The boundaries of the areas to be annexed and their borders were not defined; Russian officials stated that they would be defined later. None of the oblasts were fully under Russian control at the time of the declaration, nor since. If limited to the areas then under Russian control the annexation would still be the largest in Europe since World War II.
This timeline of the Russian invasion of Ukraine covers the period from 24 February 2022, when Russia launched a military invasion of Ukraine, to 7 April 2022 when fighting focused away from the north and towards the south and east of Ukraine.
This timeline of the prelude to the Russian invasion of Ukraine covers a period of heightened tensions between Russia and Ukraine from early 2021 until the start of the Russian invasion of Ukraine on 24 February 2022.
The following outline is provided as an overview of and topical guide to the Russo-Ukrainian War:
