集しゅう団だん的てき防ぼう衛えい

noun

collective defense

Primarily used in military and international relations contexts, referring to the principle that an attack against one member is considered an attack against all.

• NATOは集しゅう団だん的てき防ぼう衛えいの原げん則そくに基もとづいている。

  NATO is based on the principle of collective defense.