It would be essential to redesign the American deterrent strategy in a world of multiple nuclear powers -- a challenge unprecedented in our experience.

同时须在一个有多个核大国世界里重新设计美国的威慑战略-我们的经验中前所未有的挑战。

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Our forthcoming Nuclear Posture Review will move beyond outdated Cold War thinking and reduce the number and role of nuclear weapons in our national security strategy, even as we maintain a safe, secure and effective nuclear deterrent.

WHITEHOUSE: The White House

It should now be clear that a failure to modernize our nuclear weapons complex and the weapons themselves, including the delivery systems, not only threatens the continuing reliability and credibility of the U.S. nuclear deterrent, it threatens the basic tenets of our national security strategy since the end of the Cold War.

CENTERFORSECURITYPOLICY: Senator Kyl on nuclear deterrence