President Trump has long criticized the Iraq war, called for the withdrawal of U.S. troops from Afghanistan and once pledged to end the “era of endless wars.”

But over the weekend, the United States struck three nuclear sites in Iran, in an effort to support Israel in its war against Iran, potentially kicking off a more dangerous phase in the conflict.

In interviews on Sunday with supporters of Mr. Trump, they expressed a range of emotions — anger, wariness, avid support — about the U.S. attacks on Iran. But there was one dominant theme: anxiety about what comes next.

‘I’ll give him the benefit of the doubt.’

Bruce Bell, 39, Stockbridge, Mich.

Bruce Bell was at his home on Saturday night, scrolling on his phone when he saw the news of the strikes on Iran.

His reaction was wait and see.

“I agree with most people that war is bad,” he said. “But I don’t know enough about this situation with Iran. I keep hearing about red lines and how they’ve been encroaching for a while.”