President Donald Trump took a combative tone at times as he spoke remotely Thursday to an international audience of business leaders, politicians and other elites at the World Economic Forum’s annual event in Davos,

Trump promised at his inaugural address that "national unity" would return. But much of this week has seen the returning president continue to pummel out-of-power foes. He called former Republican Rep. Liz Cheney, of Wyoming, a "crying lunatic."