In 1954, Soviet leader Nikita Khrushchev transfered the Crimean Peninsula from the Russian Soviet territory to the Ukrainian Soviet territory. Upon the breakup of the Soviet Union in 1991, Ukraine retained Crimea and thus Russia's port for their Black Sea Fleet. Ukraine agreed to lease to port at Sevastopol to Russia until 2017. However, now some Russian political leaders are calling for the return of Crimea to Russia. The New York Times has more.