Top DPRK leader invites S.Korean president to visit Pyongyang

South Korean President Moon Jae-in (3rd R) meets with a high-ranking delegation of the Democratic People's Republic of Korea (DPRK), led by Kim Yong Nam (3rd L), president of the Presidium of the Supreme People's Assembly, at the Blue House in Seoul, capital of South Korea, on Feb. 10, 2018. (Xinhua/Newsis)