Left in 1990
- Lithuania- March 11, 1990- Long-standing ethnic issues. Never wanted to be part of the union any way.
- Latvia (de facto) – August 21, 1991- Long-standing ethnic issues. Never wanted to be part of the union any way.
- Estonia – August 20, 1991- Long-standing ethnic issues. Never wanted to be part of the union any way.
- Armenia – August 23, 1990- Long-standing ethnic issues. Would have stayed in a looser capitalist federation.
- Abkhazia – August 25, 1990
- Transnistria – September 2, 1990
- Udmurtia sovereign state in October 1990-? 1991
Left in 1991
- Republic of Tartarstan,? 1991- ? 1994
- Georgia – April 9, 1991- Long-standing ethnic issues. Would have stayed in a hard line USSR.
- Gagauzia - August 19, 1991
- Ukraine – August 24, 1991- Left fearing Russian nationalism. Would have settled for a looser socialist federation.
- Belarus – August 25, 1991- Left to stem of Bylorussian nationalism. Would have settled for a looser communist federation.
- Moldova – August 27, 1991- Gradually became fed up with the reformed union and more nationalistic at the same time. It's isolation from the then remains of the USSR. Would have settled for a reformed USSR.
- Kyrgyzstan – August 31, 1991- Resigned in disgust as the coup leaders try to remove the republic's leader and over ethnic issues. Never wanted to be part of the union any way, but would have settled for a looser capitalist federation.
- Uzbekistan – September 1, 1991- Gradually became fed up with the reformed union and more nationalistic at the same time. Would have settled for a reformed USSR.
- Nagorno-Karabakh – September 2, 1991
- Tajikistan – September 9, 1991- Resigned in disgust as the coup leaders try to remove the republic's parliament favouring of the hard line leader of the republic and over long standing ethno-religious. Never wanted to be part of the union any way, but would have settled for a looser capitalist federation.
- Azerbaijan – October 18, 1991- Gradually became fed up with the reformed union and more nationalistic at the same time. Would have stayed in a hard line USSR.
- Turkmenistan – October 27, 1991- Gradually became fed up with the reformed union and more nationalistic at the same time. Terkmanbashis's huge ego also played a significant role as did it's isolation from the then remains of the USSR. Would have settled for a reformed USSR.
- Chechen Republic of Ichkeria - November 1, 1991
- South Ossetia – November 28, 1991
- Russia – December 12, 1991- Left due to Boris Yelstin's ego and Russian nationalism. Would have settled for a looser klepto-capitalist federation.
- Kazakhstan – December 16, 1991- Gradually became fed up with the union and more nationalistic at the same time. Asumed independence since the USSR did not exist any more. Would have settled for a reformed USSR.