Related Clues:
- KGB whereabouts
- Erstwhile bloc letters
- Old NATO concern
- Old union mem.
- Beatles song ''Back in the ___''
- Sputnik launcher
- Superpower until 1991
- Pre-1991 world power
- SALT I signer
- Estonia, once: Abbr.
- Lithuania, once: Abbr
- HUAC concern
- Where Gorbachev ruled
- Brezhnev's empire
- 1984 summer Olympics no-show