"Russia-North Korea border" . "North_Korea\u2013Russia_border" . . "Russia's Eastern border" . "North Korea\u2013Russia" . . "Russia's short stretch" . . . "border with North Korea" . . "North Korea\u2013Russia border" . . "Soviet\u2013Korea border" . "share a border" . . . "between Russia and North Korea" . "Korea\u2013Russia border" . "Korean border" . "the border" . "North Korea\u2013Russia border" . "border" . . . . ":North Korea\u2013Russia border" .