Conservative commentator Ann Coulter lashed out at President Trump Tuesday over his treatment of Jeff Sessions, and called on him to "be a man" and fire the attorney general if he isn't happy with Sessions.

Coulter, who has been an ardent supporter of Trump's in the past, told the Washington Post that Trump was behaving like the inexperienced, paranoid Captain Philip Francis Queeg character in Herman Wouk's Pulitzer Prize-winning novel, "The Caine Mutiny."

"Be a man – if you don't want Sessions, then fire him. You're the PRESIDENT," Coulter told the newspaper in an email. "It's starting to feel like Capt. Queeg. He's screwing with Sessions? Wow, is that treacherous!"

Coulter was an early advocate for Trump during the 2016 presidential election, but her support has wavered in recent months because of delays in the construction of Trump's promised southern border wall.

Ann Coulter emails WashPost w/ msg for Pres. Trump: "Be a man – if you don’t want Sessions, then fire him. You’re the PRESIDENT." — Robert Costa (@costareports) July 25, 2017