FILE - Russian President Vladimir Putin, center right, and North Korea's leader Kim Jong Un shake hands during their meeting in Vladivostok, Russia, Thursday, April 25, 2019. A North Korean train presumably carrying North Korean leader Jong Un has departed for Russia for a possible meeting with Russian President Putin, South Korean media said Monday, Sept. 11, 2023. Citing unidentified South Korean government sources, the Chosun Ilbo newspaper reported that the train likely left the North Korean capital of Pyongyang on Sunday evening and that a Kim-Putin meeting is possible as early as Tuesday. (Yuri Kadobnov/Pool Photo via AP, File)