The former Soviet Union broke into 15 separate states.
The former Soviet Union also known as post-Soviet states are the sovereign states that stemmed from the Union of Soviet Socialist Republics when it brokeup in 1991, with Russia recognised at the international level as the successor state to the Soviet Union after the Cold War.
The fifteen states are:
Armenia
Moldova
Estonia
Latvia
Lithuania
Georgia
Azerbaijan
Tajikistan
Kyrgyzstan
Belarus
Uzbekistan
Turkmenistan
Ukraine
Kazakhstan
Russia