The Declaration of Independence of the Autonomous Republic of Crimea and Sevastopol was a joint resolution adopted on March 11, 2014 by the Supreme Council of Crimea and the Sevastopol City Council that proclaimed the Autonomous Republic of Crimea and the city of Sevastopol a sovereign state — the Republic of Crimea. The decision was taken after unmarked Russian soldiers ("little green men") invaded Ukraine and seized the Crimean parliament.