The neoconservative pundit Mark Levin posted on X on Thursday, “Here’s a novel idea: stop bullying our ally and cozying up to our enemy.” Megyn Kelly, the influential conservative podcaster, replied, “To which politician could he be talking? I guess we’ll just have to wonder.” Kelly was being tongue-in-cheek. There was no wondering. Levin was talking about J.D. Vance. He just didn’t want to name names. The vice president rocked Washington last Thursday—and infuriated neoconservatives—when he defended the Trump administration’s memorandum of understanding (MOU) deal with Iran at a press briefing. “This does bother me,” Vance said. “You've seen people...