Définitions
1.NounThe threat of massive retaliation using nuclear weapons should a potential enemy use them first, both sides being annihilated in the event of war.
2.Noun↑ McNamara, Robert (18 September 1967), “"Mutual Deterrence" Speech”, in Atomic Archive
3.Noun↑ Douglas Harper (2001–2026), “mutual”, in Online Etymology Dictionary, retrieved 18 June 2025.