WASHINGTON — President Trump opened the door on Tuesday to a phased dismantling of North Korea’s nuclear weapons program, backing away from his demand that the North’s leader, Kim Jong-un, completely abandon his arsenal without any reciprocal American concessions.
The president’s hint of flexibility came after North Korea declared last week that it would never agree to unilaterally surrender its weapons, even threatening to cancel the much-anticipated summit meeting between Mr. Kim and Mr. Trump scheduled for next month in Singapore.