Kristol is a prominent neoconservative activist known for his leading role in advocating the 2003 invasion of Saddam Hussein's Iraq.

He has been associated with a variety of center-right and conservative think tanks, such as the Manhattan Institute, the Project for a New American Century, and Keep America Safe, which he co-founded with Liz Cheney and Debra Burlingame.

• He has routinely contributed to media networks such as CNN, Fox News, and MSNBC.

• He served as chief of staff to Vice President Dan Quayle from 1989 to 1993.