Back in the USSR

 

In the decades after it was established, the Russian-dominated Soviet Union grew into one of the world’s most powerful and influential states and eventually encompassed 15 republics:

1. Russia
2.  Ukraine
3.  Georgia
4.  Belorussia
5.  Uzbekistan
6.  Armenia
7.  Azerbaijan
8.  Kazakhstan
9.  Kyrgyzstan
10.  Moldova
11.  Turkmenistan
12.  Tajikistan
13.  Latvia
14.  Lithuania
15.  Estonia

In 1991, the Soviet Union was dissolved following the collapse of its communist government. 

The post-Soviet states, also known as the former Soviet Union,  the former Soviet Republics and in Russia as the near abroad , are the 15 sovereign states that emerged and re-emerged from the Union of Soviet Socialist Republics following its breakup in 1991, with Russia being the primary de facto internationally recognized successor state to the Soviet Union after the Cold War while Ukraine, by law, proclaimed that it is a state-successor of both the Ukrainian SSR and the Soviet Union which remained under dispute over formerly Soviet-owned properties. 

The three Baltic states were the first to declare their independence, between March and May 1990, claiming continuity from the original states that existed prior to their annexation by the Soviet Union in 1940.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.