It is time for the U.S. government to admit that it has failed to prevent North Korea from acquiring nuclear weapons and intercontinental ballistic missiles that can reach the United States. North Korea no longer poses a nonproliferation problem; it poses a nuclear deterrence problem. The gravest danger now is that North Korea, South Korea, and the United States will stumble into a catastrophic war that none of them wants.
The world has traveled down this perilous path before. In 1950, the Truman administration contemplated a preventive strike to keep the Soviet Union from acquiring nuclear weapons but decided that the resulting conflict would resemble World War II in scope and that containment and deterrence were better options. In the 1960s, the Kennedy administration feared that Chinese leader Mao Zedong was mentally unstable and proposed a joint strike against the nascent Chinese nuclear program to the Soviets. (Moscow rejected the idea.) Ultimately, the United States learned to live with a nuclear Russia and a nuclear China. It can now learn to live with a nuclear North Korea.
Doing so will not be risk free, however. Accidents, misperceptions, and volatile leaders could all too easily cause disaster. The Cold War offers important lessons in how to reduce these risks by practicing containment and deterrence wisely. But officials in the Pentagon and the White House face a new and unprecedented challenge: they must deter North Korean leader Kim Jong Un while also preventing U.S. President Donald Trump from bumbling into war. U.S. military leaders should make plain to their political superiors and the American public that any U.S. first strike on North Korea would result in a devastating loss of American and South Korean lives. And civilian leaders must convince Kim that the United States will not attempt to overthrow his regime unless he begins a war. If the U.S. civilian and military leaderships perform these tasks well, the same approach that prevented nuclear catastrophe during the Cold War
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