Fox News senior judicial analyst Andrew Napolitano said that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE can’t survive “another week like the last one” after the tumultuous hearing of his former personal attorney Michael Cohen Michael Dean CohenA huge deal for campaign disclosure: Trump's tax records for Biden's medical records Our Constitution is under attack by Attorney General William Barr Eric Trump says he will comply with New York AG's subpoena only after Election Day MORE.

Napolitano wrote in a Washington Times opinion piece on Wednesday that the president’s “serious and powerful tormentors” cannot be beaten by “mockery alone.”

“He needs to do more than demean them with acerbic tweets, because many of those tormentors can legally cause him real harm. He needs to address these issues soberly, directly and maturely,” the former judge wrote.

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Napolitano said it had been a bad week for Trump because of the unsuccessful summit in Vietnam with North Korean leader Kim Jong Un in addition to the Cohen hearing.

On North Korea, he said Trump was wrong to think he could force a deal through personality alone.

Napolitano also pointed to reporting by The New York Times this week that the president authorized top-secret security clearance for his son-in-law and top adviser Jared Kushner Jared Corey KushnerAbraham Accords: New hope for peace in Middle East Tenants in Kushner building file lawsuit alleging dangerous living conditions Trump hosts Israel, UAE, Bahrain for historic signing MORE.

Top House Democrats have accused the president of “nepotism” and said their committees would examine the security clearance procedure. Trump has denied the allegation.

Napolitano said Trump did nothing illegal if he authorized the clearance, but still argued it was not a good idea.

“It was lawful for the president to do this, but it was extremely dangerous and profoundly unwise,” the Fox News analyst wrote.

"It undermined the intelligence and law enforcement communities, demeaned those who obtained such clearances by hard work and merit, and has exposed the nation’s most carefully guarded secrets to a person who American intelligence believes is naive and susceptible to foreign inducements to reveal what he knows.”