Lịch trình ‘bí ẩn’ của ông Kim Jong Un tại Việt Nam

In this Saturday, Feb. 23, 2019, photo provided on Sunday, Feb. 24, 2019, by the North Korean government, North Korean leader Kim Jong Un waves from a train before leaving Pyongyang Station, North Korea, for Vietnam. Kim was on a train Sunday to Vietnam for his second summit with U.S. President Donald Trump, state media confirmed. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)