Politics of Crimea that annexed Crimea to the Russian Federation. While the Russian Federation both claims and administers the Republic of Crimea and the city of Sevastopol as two of its federal subjects, Ukraine continues to assert that Crimea is an integral part of its territory. The Constitution of the Republic of Crimea is the basic law of the Republic of Crimea within the Russian Federation. It was ratified on 11 April 2014 and replaced the previous Constitution of the Autonomous Republic of Crimea that was repealed by the Crimean status referendum. While the Russian constitution was updated to list the Republic of
Annexation of Crimea by the Russian Federation "complete disregard" of the treaty. Both Russia and Ukraine are signatories to the Charter of the United Nations. The ratification of said charter has several ramifications in terms of international law, particularly those that cover the subjects of declarations of independence, sovereignty, self-determination, acts of aggression, and humanitarian emergencies. Vladimir Putin said that Russian troops in the Crimean peninsula were aimed "to ensure proper conditions for the people of Crimea to be able to freely express their will", whilst Ukraine and other nations argue that such intervention is a violation of Ukraine's sovereignty. Russia, United States, United Kingdom and Ukraine