VLADIVOSTOK, RUSSIA – SEPTEMBER 12: (RUSSIA OUT) Russian President Vladimir Putin (C) , South Korean Prime Minister Lee Nak-yeon (R), Chinese President Xi Jinping (2L) and Japanese Prime Minister Shinzo Abe (L) seen during the plenary of the Eastern Economic Forum on September 12, 2018 in Vadivostok, Russia. Leaders of China, Japan, South Korea, Russia and Mongolia arrived to Russia’s Far Eastern city of Vladivostok to participate the Eastern Economic Forum. (Photo by Mikhail Svetlov/Getty Images)