A prominent neoconservative intellectual and early promoter of the Iraq War is headlining an official campaign fundraiser for Hillary Clinton next month, Foreign Policy has learned. The move signals a shift in the Clinton campaign’s willingness to associate with prominent Republicans and is the latest sign of how far some GOP defectors are willing to go to block a Donald Trump presidency.Robert Kagan, a senior fellow at the Brookings Institution and a co-founder of the Project for the New American Century, will speak at a Hillary for America fundraiser ...