Related Clues:
- Weapon detonated on Enewetak Atoll in 1952, briefly
- Cold War opponent, informally
- Truman announced its development in January 1950
- Cold War threat, briefly
- Colourful types of dishes produced by old cold war country
- Weapon of mass destruction, informally
- Weapon hot British gang brought back
- Thermonuclear device
- Mao Zedong was its leader
- Cold War concern, for short
- Cold War concern ... and what created 20-, 32-, 40- and 55-Across?
- Little Boy's younger and nastier cousin admitting personal problem to hospital doctor
- Advanced atomic weapon