A preemptive war is a war that is commenced in an attempt to repel or defeat a perceived offensive or invasion, or to gain a strategic advantage in an impending (allegedly unavoidable) war . It is a war which preemptively 'breaks the peace'.
权威例句
1.
And now to someone who's long raised questions about the preemptivewar doctrine.
NPR: Dangers of Pre-Emptive War Doctrine
2.
And the White House has released an update of its preemptivewar strategy.
NPR: White House Updates National Security Strategy
3.
What is your position on the whole concept of preemptivewar?