Related Clues:
- Certain W.M.D
- U.S.S.R.'s Big Ivan, e.g
- A book on the Mob making a WMD
- Hearts flop; it's a great leveller
- Destructive device taken over in club mob-handed
- One first exploded in 1952
- Devastating weapon
- Extremely powerful weapon
- "Ivy Mike" test weapon
- Big bang, and it's no theory
- 1950s WMD
- Drop ___ on (shock)
- Mob let loose behind ice cream seller is highly explosive
- Test ban subject, briefly
- Manhattan Project goal, briefly