As FBI agents on Friday searched the home and office of John Bolton, once a top adviser to the president, Donald Trump didn't hold back, telling reporters: "I'm not a fan of John Bolton. He's a real sort of a lowlife."

John Bolton ripped Donald Trump for being played by Vladimir Putin in the hours before FBI agents raided his home on Friday morning. The president’s ex-national security adviser turned nemesis appeared on CNN on Thursday night to discuss a Truth Social post in which Trump seemed to urge Ukraine to go on the offensive against Russia.

On Aug. 22, President Donald Trump's former security adviser John Bolton's home was raided by the FBI. Here's everything to know about John Bolton, and why his home was raided.