A former Republican senator said President Trump "has a personality disorder" in comments following follows harsh rebukes of Trump this week from two retiring GOP senators.

"We have a leader who has a personality disorder," former Sen. Tom Coburn (R-Okla.) told The New York Times.

"But he's done what he actually told the people he was going to do, and they're not going to abandon him," he added.

Coburn, a medical doctor, server in the upper chamber from 2005 to 2015.

Coburn's remark follows a blistering Tuesday speech from Sen. Jeff Flake (R-Ariz.) on the Senate floor following his announcement that he would not seek reelection in 2018.

"It's also clear to me, for the moment, that we have given in or given up on our core principles in favor of a more viscerally satisfying anger and resentment," Flake said. "But anger and resentment are not a governing philosophy."

Sen. Bob Corker (R-Tenn.), who is also retiring once his term ends in January of 2019, engaged in another public feud with the president that same day, arguing Trump is "debasing" the United States.