which state is the successor of the ussr
Succession of states International convention since the end of the Cold War has come to distinguish two distinct circumstances where such privileges are sought by such a successor state, in only the first of which may such successor states assume the name or privileged international position of their predecessor. The first set of circumstances arose at the dissolution of the Union of Soviet Socialist Republics (USSR) in 1991. One of this federation's constituent republics, the Russian Federation has declared itself to be "the continuator state of the USSR" on the grounds that it contained 51% of the population of the USSR and 77% of its territory. In consequence, Russia agreed that it would acquire the USSR's seat as a permanent member of the United Nations Security Council.[12] This was also accepted by the rest of the former states of the USSR; in a letter dated 24 December 1991, Boris Yeltsin, at the time President of the Russian Federation, informed the Secretary-General that the membership of the Soviet Union in the Security Council and all other United Nations organs was being continued by the Russian Federation with the support of the 11 member countries of the Commonwealth of Independent States.[13] All Soviet embassies became Russian embassies.
Post-Soviet states The 15 post-Soviet states are typically divided into the following five groupings. Each of these regions has its own common set of traits, owing not only to geographic and cultural factors but also to that region's history in relation to Russia. In addition, there are a number of de facto independent, but internationally unrecognized states (see the section Separatist conflicts below).