Noun
the military doctrine that an enemy will be deterred from using nuclear weapons as long as he can be destroyed as a consequence
Source: WordNetThe present basic philosophy is nuclear deterrence. Joseph Rotblat
So, we need to delegitimize the nuclear weapon, and by de-legitimizing... meaning trying to develop a different system of security that does not depend on nuclear deterrence. Mohamed ElBaradei
when two nations both resort to nuclear deterrence the consequence could be mutual destruction Source: Internet