IN THE LATEST example of how foreign policy no longer neatly aligns with party politics, the Charles Koch Institute — the think tank founded and funded by energy billionaire Charles Koch — hosted an all-day event Wednesday featuring a set of speakers you would be more likely to associate with a left-wing anti-war rally than a gathering hosted by a longtime right-wing institution.

At the event, titled “Advancing American Security: The Future of U.S. Foreign Policy,” prominent realist and liberal foreign policy scholars took turns trashing the neoconservative worldview that has dominated the foreign policy thinking of the Republican Party — which the Koch brothers have been allied with for decades.

Most of the speakers assailed the Iraq War, nation building, and regime change. During a panel event also featuring former Obama Pentagon official Kathleen Hicks, foreign policy scholar John Mearsheimer brought the crowd to applause by denouncing American military overreach.

“We need to pull back, stop fighting all these wars. Stop defending rich people who are fully capable of defending themselves, and instead spend the money at home. Period. End of story!” he said, in remarks that began with a denunciation of the dilapidated state of the Washington Metrorail system.

Mearshiemer, Walt, and Freeman are particularly despised by neocons, and not simply for their starkly different policy prescriptions. Walt and Mearsheimer’s 2006 book The Israel Lobby and U.S. Foreign Policy was critical of the U.S.-Israel relationship, arguing that it was overly influenced by domestic interest groups. Freeman’s nomination to an intelligence post in the Obama White House was derailed by behind-the-scenes accusations that he wasn’t sufficiently pro-Israel.

Bloomberg View columnist Eli Lake, a hawkish supporter of Israeli government policies, expressed horror at their appearance on institute panels in a column on Wednesday, writing that “the Kochs have stayed away from the uglier fringes that blame Israel and its supporters for hijacking U.S. foreign policy. That is, until now.”