Speculation that Kim Jong Un could travel to an upcoming planned second U.S.-DPRK summit in Hanoi by train grew in Japanese and South Korean media on Monday, in line with what NK News has this month learned from an informed source.

A delegation led by DPRK leader Kim Jong Un's de facto chief of staff Kim Chang Son was spotted on Sunday at Lang Son train station – situated on the Vietnam-China border – video captured by Japan's Fuji TV showed, prompting extensive speculation in South Korean media that the North Korean leader, too, might travel to Hanoi by train.