SEOUL -- More than 70 years after the nominal end of the Korean War, North and South Korea find themselves at loggerheads 7,000 kilometers west of their heavily fortified border -- on opposing sides of the war in Ukraine.

Moscow and Kyiv have reached out for support to faraway Pyongyang and Seoul and upgraded military ties. © Illustration by Yoshiko Kawano
Russia-North Korea military upgrade triggers deeper U.S.-South Korea nuclear alliance