Summit could be North Korean leader’s first meeting with a foreign head of state in his capital.

North Korean official hand-delivers letter to U.S. president in the White House from North Korean leader.

Warning comes after administration says it will impose tariffs on steel and aluminum from Canada, Mexico and the European Union.

President expresses hopes for June 12 meeting with Kim Jong Un to go ahead, says more meetings may be needed.

China's commerce ministry reserves the right to retaliate against the US.

China will cut import tariffs for daily consumer goods.

U.S. consular officers may now limit how long visas are valid, rather than the usual practice of issuing them for the maximum possible length.

Defense chief cites Chinese militarization in justifying withdrawal of Beijing’s invitation to join military exercise.

Punitive measures get go-ahead even as Ross heads to Beijing for talks.

U.S. puts off escalating sanctions on Pyongyang as talks to meet in Singapore in June continue.