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Related Clues:
- Sputnik started it
- Target of Sakharov's criticism
- Cold war worry
- Cold War concern
- Military competition
- US/USSR competition
- Event started by 38-Across
- Contest with many missions
- Sputnik 1 launched it
- Nuclear proliferation
- Cold War goings-on
- Cold-war phenomenon
- What an offensive track event that would be!
- Deadly buildup
- What gunrunners take part in?