noun
nuclear war; nuclear warfare
Refers to armed conflict in which nuclear weapons are used. Often used in discussions of global security, deterrence, and historical contexts such as the Cold War.
核戦争が起これば、人類は滅亡するだろう。
If a nuclear war breaks out, humanity will likely perish.
冷戦時代、核戦
During the Cold War, the fear of nuclear war hung over the world.