Left by 1990
Before the coup
- Armenia – August 23, 1990
- Abkhazia – August 25, 1990
- Transnistria – September 2, 1990
- Georgia – April 9, 1991
After the coup
- Gagauzia - August 19, 1991
- Ukraine – August 24, 1991
- Belarus – August 25, 1991
- Moldova – August 27, 1991
- Kyrgyzstan – August 31, 1991
- Uzbekistan – September 1, 1991
- Nagorno-Karabakh – September 2, 1991
- Tajikistan – September 9, 1991
- Azerbaijan – October 18, 1991
- Turkmenistan – October 27, 1991
- Chechen Republic of Ichkeria - November 1, 1991
- South Ossetia – November 28, 1991
- Russia – December 12, 1991
- Kazakhstan – December 16, 1991