Exclusive: U.S. blocks North Korean air traffic revival ahead of Trump-Kim summit

The U.S. move is part of a negotiating tactic to maintain sanctions pressure on North Korea, one of the sources said, ahead of a second summit between President Donald Trump and leader Kim Jong Un in Vietnam in late February. Washington is seeking concrete commitments from Pyongyang at the summit to abandon its nuclear and missile programs. The United Nations' International Civil Aviation Organization (ICAO), with 192 member countries, has been working with Pyongyang to open a new air route that would pass through North and South Korean airspace.