nuclear deterrent
US /ˌnuː.kli.ər ˈdet.ər.ənt/
UK /ˌnuː.kli.ər ˈdet.ər.ənt/

1.
dissuasion nucléaire
a nuclear weapon or weapons system that is intended to deter an enemy from attacking by the threat of retaliation.
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The country's nuclear deterrent is a key part of its defense strategy.
La dissuasion nucléaire du pays est un élément clé de sa stratégie de défense.
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Maintaining a credible nuclear deterrent requires significant investment.
Le maintien d'une dissuasion nucléaire crédible exige des investissements importants.