Partition Treaty on the Status and Conditions of the Black Sea Fleet

The Partition Treaty on the Status and Conditions of the Black Sea Fleet was a treaty signed between Russia and Ukraine on 28 May 1997 whereby the two countries established two independent national fleets, and divided armaments and bases between them. Under the treaty, the Black Sea Fleet that was located in the Crimean peninsula at the time, was partitioned between Russia (81.7%) and Ukraine (18.3%), with Russia maintaining the right to use the Port of Sevastopol in Ukraine for 20 years until 2017. The treaty also allowed Russia to maintain up to 25,000 troops, 24 artillery systems, 132 armored vehicles, and 22 military planes on the Crimean peninsula.

On 28 March 2014, following the annexation of Crimea, Russian President Vladimir Putin submitted proposals to the State Duma on terminating a number of Russia-Ukraine agreements, including the Black Sea Fleet partition treaty and the 2010 Kharkiv Pact. The State Duma approved the denunciation of these Russian-Ukrainian agreements unanimously by 433 members of parliament on 31 March 2014.