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Related Clues:
- Country founded in 1922
- Amer. WWII ally
- Russia was part of it
- Pre-1991 power
- Erstwhile power
- SALT talks nation
- Nation in Dec. 1991 news
- Old atlas initials
- Cold war foe, for short
- SALT superpower
- Superpower that dissolved in the 1990s
- World power until '91
- CIS forerunner
- Afghanistan occupier, in the 1980s
- Pre-'91 superpower