<P> The post-Soviet states , also collectively known as the former Soviet Union ( FSU ) or former Soviet Republics , are the 15 independent states that emerged from the Union of Soviet Socialist Republics in its dissolution in December 1991 , with Russia internationally recognised as the successor state to the Soviet Union . On March 11 , 1990 , Lithuania was the first to declare its independence , with Estonia and Latvia following suit in August 1991 . All three Baltic states claimed continuity from the original states that existed prior to their annexation by the Soviet Union in 1944 and were admitted to the United Nations on 17 September 1991 . The remaining 12 republics all subsequently seceded. 12 of the 15 states , excluding the Baltic states , initially formed the CIS and most joined CSTO , while the Baltic states focused on European Union and NATO membership . </P>
<P> The post-Soviet states , also collectively known as the former Soviet Union ( FSU ) or former Soviet Republics , are the 15 independent states that emerged from the Union of Soviet Socialist Republics in its dissolution in December 1991 , with Russia internationally recognised as the successor state to the Soviet Union . On March 11 , 1990 , Lithuania was the first to declare its independence , with Estonia and Latvia following suit in August 1991 . All three Baltic states claimed continuity from the original states that existed prior to their annexation by the Soviet Union in 1944 and were admitted to the United Nations on 17 September 1991 . The remaining 12 republics all subsequently seceded. 12 of the 15 states , excluding the Baltic states , initially formed the CIS and most joined CSTO , while the Baltic states focused on European Union and NATO membership . </P>
nation that russia was once a part of
nation that russia was once a part of
Union of Soviet Socialist Republics
Union of Soviet Socialist Republics