Related Clues:

• It broke up in Dec. 1991
• Cold war foe
• Cold war abbr.
• Atlas abbr. before 1991
• C.C.C.P. units
• Former world power, for short
• Warsaw Pact land
• Boycotter of the '84 L.A. Olympics
• Georgia et al., once: Abbr.
• Khrushchev's concern
• CCCP on 20th-century maps
• SALT signer
• Azerbaijan and Ukraine, once: Abbr.
• ''Back in the ---'' (Beatles)
• Georgia et al., once