Vice President JD Vance’s role in selling a war in Iran is, on one hand, an uncomfortable position for an Iraq War veteran who rose to political prominence as an anti-interventionist. The fact that President Donald Trump had started no wars in his first term underpinned the early endorsement Vance offered him in his 2024 White House bid. And an old Merle Haggard song — complete with the lyric “Let’s get out of Iraq and back on the track” — played as Vance arrived for the second night of that year’s Republican National Convention in Milwaukee. But Vance has also consistently held a more hawkish position on Iran, asserting that the U.S. must be prepared to prevent it from developing or deploying nuclear weapons. And while Trump and members of his administration have offered varying justifications for starting a war without congressional approval, Vance has zeroed in narrowly on Iran’s nuclear capabilities. “What the president determined is he didn’t want to just ...…