President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE on Wednesday touted his score on a cognitive test, suggesting he scored higher than his predecessors.

In an interview with Reuters, he blamed former Presidents Obama, George W. Bush and Clinton for failing to solve the nuclear threat from North Korea.

“I guess they all realized they were going to have to leave it to a president that scored the highest on tests,” Trump said in the interview.

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Trump's comments come less than a week after his first physical since taking office.

On Tuesday, Navy Rear Adm. Dr. Ronny Jackson, the White House physician, briefed reporters on the results, saying that Trump is in "excellent" health and is mentally fit.

Jackson said that at Trump's insistence he administered a cognitive test as well. The doctor said Trump performed well and that there was "no indication" that Trump had any cognitive issues.

Jackson went on to dismiss scrutiny over the president's mental state as "tabloid psychiatry."

"People shouldn't be making those kind of assessments about the president unless they have the opportunity to get to know him and examine him," he said.