美朝官员为可能举行的“川金会”进行磋商

U.S. and North Korean officials met again Monday at the demilitarized zone to talk about a possible summit between President Donald Trump and North Korean leader Kim Jung Un.

After calling off the talks Thursday, Trump said the June 12 summit in Singapore may very well take place as scheduled.

"I truly believe North Korea has brilliant potential and will be a great economic and financial nation one day," Trump said Sunday on Twitter. "Kim Jong Un agrees with me on this. It will happen."

After a surprise meeting Saturday between Kim and South Korean President Moon Jae-in, the Seoul leader said Kim is still committed to the "complete denuclearization" of the Korean peninsula, but he declined to define the phrase, suggesting that difficult negotiations lie ahead between the U.S. and North Korea.

The U.S. has called for "complete, verifiable and irreversible" dismantling of the Pyongyang's nuclear arsenal, but North Korea has rejected unilateral disarmament and called for denuclearization of the Korean peninsula.

Some U.S. officials remain skeptical that the U.S.-North Korean talks would lead to the end of the North's nuclear program.