The nominal successor to the Soviet Union was the Commonwealth of Independent States; Ukraine joined on Dec. 8, 1991. Serious tensions soon emerged with Russia as [[Moscow]] took possession of the [[Black Sea]] fleet anchored at Sevastopol, while some Russian politicians wanted the [[Donbas]] and the [[Crimea]]; the latter, being in Russian hands since 1783, had been placed under Ukrainian administration by [[Nikita Khrushchev]], himself a Ukrainian, without a [[democracy|democratic]] referendum or the [[self-determination]] of the peoples involved in 1954. | The nominal successor to the Soviet Union was the Commonwealth of Independent States; Ukraine joined on Dec. 8, 1991. Serious tensions soon emerged with Russia as [[Moscow]] took possession of the [[Black Sea]] fleet anchored at Sevastopol, while some Russian politicians wanted the [[Donbas]] and the [[Crimea]]; the latter, being in Russian hands since 1783, had been placed under Ukrainian administration by [[Nikita Khrushchev]], himself a Ukrainian, without a [[democracy|democratic]] referendum or the [[self-determination]] of the peoples involved in 1954. |