Tennessee Sen. Bob Corker dissected President Trump's administration Sunday and warned Trump is making reckless threats that could be "on the path to World War III."
Corker told the New York Times Trump is treating the presidency like "a reality show" and he acts "like he's doing ‘The Apprentice' or something."
"I know for a fact that every single day at the White House, it's a situation of trying to contain him," Corker said.
Corker and Trump have been embroiled in a daylong war of words that started when Trump ripped Corker on Twitter Sunday morning. Corker shot back by calling the White House an "adult daycare center."
Later on, Trump said Corker had only given the country the Iran nuclear deal and that's it.
Corker may have gotten the last word for the day in the interview with the Times.
He said he likes Trump, but he thinks he's dangerous for the country.
"He concerns me," Corker said. "He would have to concern anyone who cares about our nation."
Corker also ripped Trump for undercutting Secretary of State Rex Tillerson in negotiations with North Korea.
He said it may seem like there's a grand plan for negotiating with the Hermit Kingdom when Trump tweets messages that are the opposite of the U.S. diplomatic line, but there is not.
"A lot of people think that there is some kind of ‘good cop, bad cop' act underway, but that's just not true," Mr. Corker said.
He said Republican lawmakers think Trump is more of a hindrance.
"Look, except for a few people, the vast majority of our caucus understands what we're dealing with here," he said. "Of course they understand the volatility that we're dealing with and the tremendous amount of work that it takes by people around him to keep him in the middle of the road."