"It could be a resulting work of the U.S.-led sanctions and pressure," President Moon Jae-in told reporters. "I think President Trump deserves big credit for bringing about the inter-Korean talks."

Mr. Trump told Mr. Moon in a phone call that he is open to talking with North Korea, the South's presidential office said. Mr. Trump also said there would be no military action while talks are ongoing, the statement said.

The White House said that Mr. Moon thanked the president "for his influential leadership in making the talks possible."

The North-South talks, held on Tuesday, were the first in two years, and North Korea announced that it would send a delegation to the Olympics in Pyeongchang next month. Mr. Trump said Vice President Mike Pence will lead the U.S. delegation to the games.

In their phone call, the White House said the two leaders "underscored the importance of continuing the maximum pressure campaign against North Korea."