The siege of Mariupol began on 24 February 2022, as part of the Russian invasion of Ukraine, and lasted until 20 May. It saw fighting between the Russian Armed Forces and the Ukrainian Armed Forces for control over the city of Mariupol in southeastern Ukraine. Lasting for almost three months, the siege ended in a victory for Russia and the Donetsk People's Republic (DPR), as Ukraine lost control of the city amidst Russia's eastern Ukraine offensive and southern Ukraine offensive; all Ukrainian troops remaining in the city surrendered at the Azovstal Iron and Steel Works on 20 May 2022, after they were ordered to cease fighting.