South Korean President Moon Jae-in will travel to the United States in two weeks for a summit with President Donald Trump on stalemated North Korean nuclear diplomacy.

It would be their first meeting since Trump's second summit with North Korean leader Kim Jong Un in Vietnam last month. Their talks collapsed due to disputes on U.S.-led sanctions on the North, and North Korea recently threatened to quit the nuclear diplomacy.

Moon, a liberal who favors greater ties with North Korea and a negotiated solution to the nuclear crisis, shuttled between Washington and Pyongyang to facilitate the nuclear diplomacy. The breakdown of the Hanoi summit subsequently put Moon in a difficult position on how to further engage North Korea and promote the nuclear diplomacy.

The White House and Moon's office said Moon and his wife will visit the United States on April 10-11 and Moon will meet with Trump at the White House to discuss developments on North Korea and bilateral issues.

The two leaders will discuss how to strengthen their countries' alliance and achieve North Korea's complete denuclearization and peace on the Korean Peninsula, senior South Korean presidential official Yoon Do-han told a televised conference.

The White House in its statement said the alliance between the U.S. and South Korea "remains the linchpin of peace and security on the Korean Peninsula and in the region."

Earlier this month, North Korean Vice Foreign Minister Choe Son Hui said her country has no intention of compromising or continuing the nuclear talks unless the United States takes steps commensurate with those the North has taken, such as its moratorium on missile launches and weapons tests, and changes its "political calculation." She said Kim would soon decide whether to continue the talks and the moratorium.

North Korea later withdrew its entire staff at a liaison office with South Korea before sending some of them back to the office at the North Korean border town of Kaesong. North Korea hasn't provided any reason for its action. Some experts say North Korea still hopes to keep diplomacy with the United States alive.