Vietnamese Deputy Minister of Foreign Affairs Le Hoai Trung (R, Rear) speaks at a press conference in Hanoi, Vietnam, on Feb. 25, 2019. The upcoming visit by Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK), is the first by a DPRK top leader in 55 years to Vietnam, Vietnamese Deputy Minister of Foreign Affairs Le Hoai Trung said Monday. (Xinhua/Wang Shen)