William Kristol (; born December 23, 1952) is an American neoconservative political analyst. A frequent commentator on several networks, he was the founder and editor-at-large of the defunct political magazine The Weekly Standard.
A Republican, he is known for playing the leading role in the defeat of President Bill Clinton’s health care plan and advocating for the U.S. invasion of Iraq. Kristol has since become a prominent critic of President Donald Trump.Kristol has been associated with a number of conservative think tanks. He was chairman of the New Citizenship Project from 1997 to 2005. In 1997, he co-founded the Project for the New American Century (PNAC) with Robert Kagan. He is a member of the board of trustees for the free-market Manhattan Institute for Policy Research, a member of the Policy Advisory Board for the Ethics and Public Policy Center, and a director of the Foreign Policy Initiative. He is also one of the three board members of Keep America Safe, a national-security think tank co-founded by Liz Cheney and Debra Burlingame, and serves on the board of the Emergency Committee for Israel and the Susan B. Anthony List (as of 2010). He has featured in a web program of the Foundation for Constitutional Government, Conversations with Bill Kristol, since 2014.