William McRaven says America is 'under attack' by Trump - here's what else the retired Navy SEAL admiral has to say about the president

In a Washington Post opinion column in August 2018, McRaven criticized Trump and the White House's decision to revoke the security clearance of former CIA Director John Brennan.

Brennan, who was deeply critical of Trump, described the move as an effort to "suppress freedom of speech & punish critics."

The White House said its decision was based on Brennan's "erratic conduct and behavior" and that it questioned his "objectivity and credibility."

"Mr. Brennan's lying and recent conduct, characterized by increasingly frenzied commentary, is wholly inconsistent with access to the nation's most closely held secrets and facilitates the very aim of our adversaries, which is to sow division and chaos," the White House said at the time.

McRaven described Brennan as "one of the finest public servants" and dared the White House to revoke his own security clearance.

"I would consider it an honor if you would revoke my security clearance as well, so I can add my name to the list of men and women who have spoken up against your presidency," McRaven wrote.

"A good leader sets the example for others to follow," McRaven added. "A good leader always puts the welfare of others before himself or herself."

"Your leadership, however, has shown little of these qualities," McRaven wrote of Trump. "Through your actions, you have embarrassed us in the eyes of our children, humiliated us on the world stage and, worst of all, divided us as a nation."

During a CNN interview in June, McRaven admitted he and Presidents Barack Obama and George W. Bush "didn't agree ... on every issue."

But McRaven said that despite their differences, the two presidents displayed intrinsic qualities that kept him from questioning their character.

"They were men of great integrity and great character and were always trying to do what was right for the nation," McRaven said.

McRaven contrasted those presidents with Trump, who he hoped would take on some of values of previous commanders-in-chief.

"And my hope and my prayers continue to be that President Trump will see that integrity and character and doing what is right for the nation," McRaven said.

McRaven added that he believed Trump "tries to do" what he believes is right for the country but that "he may want to look at the examples of the two presidents that came before him."

In a New York Times opinion column, titled "Our Republic Is Under Attack From the President," published on October 17, McRaven warned that Trump's policies were a stain on the US and its values.

In the column, McRaven recounted an instance this month in which a retired four-star general gave a candid assessment of the president.

"One retired four-star general, grabbed my arm, shook me and shouted, 'I don't like the Democrats, but Trump is destroying the Republic,'" McRaven wrote. "Those words echoed with me throughout the week."

McRaven pointed out what he said were examples of the US neglecting its duty to be the "the protectors of the less fortunate."

"If our promises are meaningless, how will our allies ever trust us? If we can't have faith in our nation's principles, why would the men and women of this nation join the military," McRaven wrote. "And if they don't join, who will protect us? If we are not the champions of the good and the right, then who will follow us? And if no one follows us — where will the world end up?"