superweapon

noun

1. An extremely powerful weapon.

   “We must be very careful how we pin our faith on this thing, assuming that It is successfully developed; we must be wary of the idea that a superweapon can give us a superpower in the world or relieve us of the hard obligations of intelligent policy and diplomacy, of consistency, integrity, and foresight on the basic plane of human relationships.”

   “And this was what Prussianism aimed at with her supermen and superweapons: to place the whole world in fetters and enforce the doctrine that “ might is right.””

   “It was after the publication of 1984 that Orwell became, as Isaac Deutscher put it, an ideological "superweapon of the cold war."”