Russian President Vladimir Putin's comments on Thursday that Moscow may supply weapons for North Korea after signing a defense pact with Pyongyang are "incredibly concerning," U.S. State Department spokesperson Matthew Miller said. Putin suggested after a visit to North Korea this week that weapons supplies to the isolated nuclear-armed country would be a mirror response to the Western arming of Ukraine. He also warned that U.S. ally South Korea would be making "a big mistake" if it decided to supply arms to Ukraine, and that Moscow would respond to such a move in a way that would be painful for Seoul. "It is ... (full story)