Republican Bob Corker, who previously called Trump's volatile White House an "adult day care centre" and warned the president could start World War Three, said Trump's tweets dismissing Tillerson's negotiation efforts were narrowing America's options on dealing with countries like Iran and North Korea.
Tillerson's comments on Sunday come amid soaring tensions between the USA and North Korea following a series of weapons tests by Pyongyang and a war of words between the two countries' leaders.
Appearing on CNN, Tillerson said the USA wished to remain within the Iran nuclear deal and denied that China was confused about the administration's North Korea policy.
"I checked. I'm fully intact", Tillerson said when asked about Corker's comments on CNN.More news: Azores on hurricane alert as Ophelia strengthens
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In an interview Sunday, however, Tillerson refuted Corker's suggestion that the president is undermining him. "And so everything that I have witnessed, all was fine", she said. Tillerson said Trump was "unconventional" in his methods of motivating change in a town resistant to change. "I'm just not going to be part of this effort to divide this administration".
"I'm not playing", Tillerson said.
"The president speaks for himself", Tillerson said at the time.
"And I can tell you who is going to win", Trump told Forbes magazine. Trump said on Twitter.
Senate Foreign Relations Committee Chairman Bob Corker said Trump's comments were the equivalent of castrating the secretary in public.
They men also disagreed on the nation's Afghanistan strategy, which was discussed in the July Pentagon meeting, though Trump was persuaded by Tillerson and Secretary of Defense James Mattis to maintain the United States' presence in the region. Sen.