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Opinion The Hanoi summit failure exposes Trump’s weak diplomacy

President Trump and North Korean leader Kim Jong Un take a walk after meeting in Hanoi on Thursday. (Evan Vucci/AP)

THE FAILURE of President Trump’s summit with Kim Jong Un revealed the fundamental weakness of Mr. Trump’s strategy for addressing the growing nuclear threat from North Korea. The president supposed that his personal and improvisational diplomacy, featuring unwarranted and unseemly flattery of a murderous tyrant, would make possible the substantive steps toward disarmament that the regime has resisted for decades. Instead, he was presented by Mr. Kim with a patently unacceptable offer that left him no choice but to walk away.

It’s good that he did walk away, but Mr. Trump’s miscalculation leaves U.S.-North Korean relations in disarray, even as the regime continues to produce material for weapons and long-range missiles capable of striking the United States. His failure calls for a fundamental reshaping of the U.S. approach — one that is more realistic about the nature of the Kim regime, including its horrific human rights violations.

If the administration had pursued a more substantive approach to the negotiations, Mr. Kim would have known the position he brought to Hanoi was a nonstarter. By Mr. Trump’s account, the 35-year-old ruler offered to shut down the North’s Yongbyon nuclear complex in exchange for the removal of all sanctions — something that would have left his regime in possession of other nuclear facilities, not to mention its existing arsenal. (North Korea says it asked for nullification of five U.N. resolutions that contain most, but not all, sanctions.) Pyongyang has twice before struck deals to close Yongbyon, only to renege. Even if its closure were guaranteed in this instance, it would fall far short of the minimum the United States should require for the lifting of sanctions.

Mr. Kim may have believed he could bamboozle Mr. Trump, who, at their last meeting, abruptly agreed to suspend U.S. military exercises with South Korea in exchange for an ambiguous statement about denulearization. Since then, Mr. Trump has gushed about flattering letters he received from Mr. Kim, spoken about falling in love with him and ceased U.S. efforts to call attention to the crimes against humanity Mr. Kim is credibly accused of. Meanwhile, international economic pressure on the regime eased.

Even after the summit’s failure, Mr. Trump persisted in sending the wrong messages. At a news conference in Hanoi, he cast doubt on the U.S. intelligence community’s assessment that North Korea is continuing to expand its nuclear arsenal and declined to say whether he would still demand complete denuclearization before lifting sanctions. He again questioned the costs of the U.S.-South Korean military alliance.

Worst of all, Mr. Trump offered Mr. Kim a pass on the case of American Otto Warmbier, saying he accepted the dictator’s word that he did not know about the gross mistreatment that led to Warmbier’s death. If Mr. Kim can obtain Mr. Trump’s sanction for such atrocities, it’s no wonder he would offer only one-sided deals.

Mr. Trump said Mr. Kim had assured him North Korea would not return to nuclear or missile testing; if that remains true, there will still be time and opportunity for negotiation. But it now ought to be clear that the president’s shallow and slapdash attempts at dealmaking are not going to succeed.

Read more:

Jennifer Rubin: Trump’s utterly unsurprising diplomatic debacle

John Brennan: Trump must listen to the North Korea experts, not his gut

The Post’s View: The dangers of a second North Korea summit

Fred Hiatt: Why I can’t stop thinking about Otto Warmbier