The secretary of State later noted in the interview that he and Trump "don't agree on everything". Tillerson had a meeting with Organization of American States Secretary General Luis Almagro at the State Department today. They feed on it in a very destructive way.
"If we achieve that, there will be nothing to walk away from because the objective will be achieved".
Appearing on CNN, Tillerson said the United States wished to remain within the Iran nuclear deal and denied that China was confused about the administration's North Korea policy.
The tweet came the day after Tillerson had told a news conference in Beijing that America was directly communicating with North Korea on its nuclear and missile programme but it had shown no interest in dialogue. "The president is building a very strong message to North Korea that you will engage with us at some point to solve this because we're not going to allow you to have nuclear weapons".
Trump's tweets were widely seen as undercutting his government's diplomatic efforts.
Trump has whipped out statements contradicting Tillerson on major diplomatic matters, such as peace talks with North Korea, giving many of Tillerson's missions a beating.
"You can not publicly castrate your own secretary of state", Corker, the chairman of the Senate Foreign Relations Committee, told The Washington Post. Several top officials, including Tillerson, Secretary of Defense Jim Mattis and chief of staff John Kelly are helping "separate our country from chaos", Corker said earlier this month.
He added Trump had also urged him to continue in his diplomatic attempts with Pyongyang, explaining: "Those diplomatic efforts will continue until the first bomb drops".
Rex Tillerson on Sunday assured in a national television that President Trump has not "castrated" him on the job, joking that he has "checked" to make sure.
"He is not seeking to go to war", he continued.
"I think this is an unconventional president", he told CNN's Jake Tapper.
In Sunday's interview, Tillerson would not deny using the insult about the president.