Related Clues:
- Blast maker, informally
- Weapon of mass destruction
- Weapon since 1952
- Thermonuclear blast maker
- Nuclear weapon
- Atomic weapon
- Fusion weapon
- 31 Across subject
- Thermonuclear explosive (Abbr.)
- Cold war specter
- Oppenheimer opposed it
- Weapon since '52
- *Weapon first tested in '52
- 16-Across concern, briefly
- Explosive weapon