Before the 1954 transfer of Crimea, Sevastopol was into a "city of republican subordination" of the Russian SFSR (a predecessor of modern status of "city of federal importance"). Nevertheless, in practice it was still governed as a part of Crimean Oblast (for example, inhabitants of Sevastopol elected deputies into Crimean Oblast Council, all its structures, such as local "militsiya" departments, etc., were subordinated to oblast structures) and therefore was practically transferred too. The Ukrainian Constitution of 1978 listed Sevastopol as one of its "cities of republican subordination" (along with Kyiv), whilst the Russian constitution of the same year didn't list Sevastopol as such. In 1993, the Supreme Soviet of the Russian Federation issued a , which "confirms Russian federal status of Sevastopol" and requested a parliamentary commission to prepare and present to Congress of People's Deputies of Russia corresponding constitutional amendments, but 1993 Russian constitutional crisis prevented that from happening and initial revisions of the Constitution of Russia, adopted on 12 December 1993, did not list Sevastopol as a federal subject. Three years later, the State Duma declared that Russia has a right to exercise sovereignty over Sevastopol, but this resolution went without any actual effect. An agreement was concluded in 1997 by the Russian and Ukrainian governments, allowing the Black Sea Fleet to stay in Sevastopol until 2017 (later extended by another 25 years until 2042, with possible option to extend this period until 2047).