SEOUL—South Korean President Moon Jae-in and U.S. President Donald Trump agreed to closely coordinate policies “at every stage” of the coming denuclearization talks with North Korea during a 35-minute phone conversation, Seoul’s presidential office said.
The phone call, conducted late Friday evening in Seoul and early Friday morning in Washington, comes just weeks before Mr. Moon is expected to meet North Korean leader Kim Jong Un in the first inter-Korean summit since 2007, to discuss North Korea’s possible dismantling of...