Former White House national security adviser John Bolton pleaded guilty Friday to charges that he unlawfully kept and transmitted classified national security information. The case is a big win for President Donald Trump, who went after Bolton after he exposed embarrassing details about Trump’s first term.Bolton admitted to sharing classified details with his wife and daughter, which amounts to one felony count. He was accused of 18 violations, but only pleaded guilty to one. Bolton has agreed to pay a fine of over $2 million, and could face up to five years in prison.The case centered around notes Bolton took for his 2020 memoir, The Room Where It Happened, and the information he shared with his family as part of the editing process. During the first Trump administration, the Justice Department tried to prevent the book from coming out, claiming it contained classified information.The memoir revealed damning details about the first Trump presidency, including Trump’s corrupt foreign policy dealings, his general incompetence, and confirmation that Trump withheld military aid from Ukraine until they agreed to investigate Joe Biden, which Trump was impeached for in 2019.Trump has called his former national security adviser a “lowlife” and a “sleazebag,” and claimed that if he had listened to Bolton’s advice while in office, the U.S. would be in “World War Six” by now.Though Bolton is just one of many Trump enemies that have been prosecuted at the president’s fancy, CNN reports that the case against him was more sound than the others.