President Trump is so unhappy with Attorney General Jeff Sessions that he has raised the possibility of bringing back Rudolph Giuliani to head the Justice Department, according to West Wing confidants.

In internal conversations, Trump has recently pondered the idea of nominating Giuliani, a stalwart of his campaign.

of nominating Giuliani, a stalwart of his campaign. Even before last week's blast at Sessions in a New York Times interview, Trump had expressed fury at Sessions — also one of the first prominent Republicans to back the Trump campaign — for recusing himself from the Russia investigation.

at Sessions in a New York Times interview, Trump had expressed fury at Sessions — also one of the first prominent Republicans to back the Trump campaign — for recusing himself from the Russia investigation. And in a Monday morning tweet, Trump referred to "our beleaguered A.G." not investigating Hillary Clinton.

Our thought bubble: Trump often muses about possible personnel moves that he never makes, sometimes just to gauge the listener's reaction. So the Giuliani balloon may go nowhere.

As Axios reported Saturday, Newt Gingrich — who also went all-in with the Trump campaign — may take a more visible, frequent role as a defender as Trump girds for battle with special counsel Bob Mueller.

Giuliani would have a tough time getting 50 Republicans senators to vote to confirm him. He was such an early and ardent Trump backer that he wouldn't be seen as an independent guardian of the department in these tumultuous times.

In fact, the nomination could be seen as Trump throwing gasoline on a fire. And Giuliani's stop-and-frisk police policy as New York mayor, and clients since then, also would be controversial with many senators.

Nevertheless, the leaks about Giuliani and Gingrich are revealing in four ways: