How Kim Jong-un keeps Russia-bound troops on a tight leash to stop desertion South China Morning PostNorth Korean troops fighting for Russia in Ukraine ‘fair game,’ U.S. warns Putin NBC NewsSouth and North Korea troops potentially entering Russia-Ukraine war unlikely to stoke regional conflict CNBCRussia-Ukraine war: List of key events, day 973 Al Jazeera EnglishKey Republican: US should consider ‘direct military action’ if North Korean troops enter Ukraine The Hill