Neoconservative historian Robert Kagan — one of the prime intellectual backers of the Iraq War and an advocate for Syrian intervention — announced in the Washington Post last week that if Trump secures the nomination, "the only choice will be to vote for Hillary Clinton."

Max Boot, an unrepentant supporter of the Iraq War, wrote in the Weekly Standard that a "Trump presidency would represent the death knell of America as a great power," citing, among other things, Trump's objection to a large American troop presence in South Korea.

Trump has done much to trigger the scorn of neocon pundits. He denounced the Iraq War as a mistake based on Bush administration lies, just prior to scoring a sizable victory in the South Carolina GOP primary. In last week's contentious GOP presidential debate, he defended the concept of neutrality in the Israeli-Palestinian conflict, which is utterly taboo on the neocon right.

"It serves no purpose to say you have a good guy and a bad guy," he said, pledging to take a neutral position in negotiating peace.