Trump escalates clash with Zelenskyy as Russia continues deadly attacks on Ukraine

The war of words between President Trump and Ukraine's Volodymyr Zelenskyy reached another fever pitch on Monday. Trump again excoriated the embattled Ukrainian leader, putting more pressure on Zelenskyy than on the man in Moscow who started this war, Vladimir Putin. The president's comments come after the U.S. has limited a key technology that Ukraine relies on. Nick Schifrin reports.