North Korea has all but completed its quest for nuclear weapons. It has demonstrated its ability to produce boosted-fission bombs and may be able to make fusion ones, as well. It can likely miniaturize them to fit atop a missile. And it will soon be able to deliver this payload to the continental United States. North Korea’s leader, Kim Jong Un, has declared his country’s nuclear deterrent complete and, despite his willingness to meet with U.S. President Donald Trump, is unlikely to give it up. Yet Washington continues to demand that Pyongyang relinquish the nuclear weapons it already has, and the Trump administration has pledged that the North Korean regime will never acquire a nuclear missile that can hit the United States. The result is a new, more dangerous phase in the U.S.–North Korean relationship: a high-stakes nuclear standoff.
In March, U.S. and South Korean officials announced the possibility of a Kim-Trump meeting. But regardless of whether diplomacy proceeds or the United States turns its focus to other tools—sanctions, deterrence, even military force—the same underlying challenge will remain: the outcome of this standoff will be determined by whether and how each country
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