The threat of nuclear war has diminished.
核战的威胁变小了。
Nuclear weapons seem to violate the just war principle of proportionality.
核武器似乎违背了罚当其罪的正义战争原则。
When two countries have nuclear weapons, a war may not be worth fighting.
而且，当两个国家都可以置对方于死地时，打仗是很愚昧的。
Nuclear proliferations have speeded space war.
核扩散使空间战进程加快了速度。
Nuclear proliferations have speeded space war.
核扩散使空间战进程加快了速度。
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