Donald Trump has reached a new level of petty. The 2016 GOP presidential nominee reaffirmed his contention that President Obama was effectively the “founder” of the Islamic extremist group ISIS Thursday.

The New York Times reports that the contender for commander-in-chief said that he intended to stick with his unorthodox campaign style, even if it meant taking “a very, veyr nice long vacation” after the Nov. 8 election.

“At the end, it’s either going to work or I’m going to, you know, I’m going to have a very, very nice long vacation,” he said. During his interview on CNBC, Trump actively refuted criticism that his claim about the president was inaccurate, inflammatory and unfounded. At a rally in Sunrise, Fla., Wednesday night, Trump suggested that the Islamic State “honors” President Obama.

Later on, in an interview with conservative Radio Host Hugh Hewitt, the host gave Trump the opportunity to clear up his comments, but he made it plain that he had said what he meant.

“You meant that he created the vacuum, he lost the peace,” Hewitt suggested.

“No, I meant he’s the founder of ISIS. I do,” Trump responded. “He was the most valuable player. I give him the most valuable player award. I give her, too, by the way, Hillary Clinton.”

“But he’s not sympathetic to them,” Hewitt replied in reference to the president. “He hates them. He’s trying to kill them.”

“I don’t care,” said Trump. “He was the founder. His — the way he got out of Iraq was that that was the founding of ISIS, O.K.?” Hillary Clinton’s Senior Policy Adviser Jake Sullivan responded to the claims. He accused Trump of “echoing the talking points of Putin and our adversaries to attack American leaders and American interests.”

“This is another example of Donald Trump trash-talking the United States,” Sullivan said in a statement sent to the Times. “It goes without saying that this is a false claim from a presidential candidate with an aversion to the truth and an unprecedented lack of knowledge.”