WASHINGTON, March 8 (Xinhua) -- U.S. President Donald Trump has agreed to meet Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK) by May at the invitation of Kim, said visiting South Korean envoy on Thursday.

Kim said the DPRK "will refrain from any further nuclear or missile test," Chung Eui-yong, South Korea's top national security adviser, told reporters at the White House.