Page "1991 Soviet coup d'état attempt" Paragraph 49

By November, the only Soviet Republics that had not declared independence were Russia, Belarus, Kazakhstan and Uzbekistan.

That same month, seven republics ( Russia, Belarus, Kazakhstan, Uzbekistan, Kyrgyzstan, Turkmenistan and Tajikistan ) agreed to a new union treaty that would form a confederation called the Union of Sovereign States.

However, this confederation never materialized.