AP: America and the world can “sleep well tonight,” President Donald Trump declared on Wednesday, boasting that his summit with Kim Jong Un had ended any nuclear threat from North Korea though the meeting produced no details on how or when weapons might be eliminated or even reduced.

While Trump claimed a historic breakthrough at the most significant diplomatic event of his presidency, Secretary of State Mike Pompeo, was more measured. He said the U.S. wants North Korea to take “major” nuclear disarmament steps within the next two years — before the end of Trump’s first term in 2021.

Pompeo also cautioned that the U.S. would resume “war games” with close ally South Korea if the North stops negotiating in good faith. The president had announced a halt in the drills after his meeting with Kim on Tuesday, a concession long sought by Pyongyang.