Russia Annexes Crimea

In March 2014, Russia formally annexed Crimea, a peninsula in the Black Sea that was internationally recognized as part of Ukraine. The move followed a rapid takeover by Russian forces and a disputed referendum. It was the first time since the Second World War that a European state had seized territory from another by force and incorporated it into its own, and it broke commitments Russia had made to respect Ukraine's borders, including the 1994 Budapest Memorandum. The annexation set the stage for years of conflict and a lasting rupture between Russia and the West.

Crimea had been part of Russia since the late eighteenth century, when the Russian Empire absorbed it from the Crimean Khanate. In 1954 the Soviet leadership transferred it administratively to the Ukrainian Soviet Socialist Republic, a change that mattered little until the USSR dissolved in 1991 and Crimea became part of independent Ukraine. The peninsula had a large ethnic Russian population, a substantial Ukrainian minority, and the Crimean Tatars, a Muslim Turkic people deported en masse under Stalin in 1944 and who began returning in the late 1980s. Russia's Black Sea Fleet remained based at Sevastopol under a lease agreement with Kyiv.

The immediate trigger was Ukraine's political crisis in early 2014. After months of protests in Kyiv, President Viktor Yanukovych, who had shelved a closer agreement with the European Union, fled the country in February. In the days that followed, armed men in uniforms without insignia, later acknowledged by President Vladimir Putin to be Russian troops, took control of Crimea's parliament, airports and key military sites. A new local leadership was installed, and a referendum was held in mid-March under military presence. Officials announced an overwhelming vote to join Russia, but the vote offered no option to keep the status quo, was not recognized by most countries, and was widely regarded by outside observers as illegitimate. Russia signed a treaty of accession within days.

The consequences were far-reaching. The United States, European Union and others imposed sanctions on Russian officials and later on parts of its economy, and Russia was suspended from the G8. The United Nations General Assembly passed a resolution affirming Ukraine's territorial integrity. Within weeks, a separatist conflict began in eastern Ukraine's Donbas region, in which Russian involvement was extensive, though Moscow long denied a direct role.

Inside Crimea, Russia moved to integrate the territory, and rights groups have documented pressure on dissenters and on Crimean Tatar leaders and institutions. Many Russians welcomed the annexation, and it boosted Putin's domestic popularity. Ukraine and most of the world still regard Crimea as Ukrainian territory. The events of 2014 are widely seen as the beginning of the war that escalated into Russia's full-scale invasion of Ukraine in February 2022.