Sen. Lindsey Graham said Sunday the United States must support Israel if it decides to strike Iran’s nuclear program.

His comments come days after Iranian Foreign Minister Abbas Araghchi warned that an attack by Israel or the United States on Iran’s nuclear facilities would lead the region into an “all-out war.”

“I think America should support an effort by Israel if they decide to decimate the Iranian nuclear program because I think it is a threat to mankind,” Mr. Graham said on “Fox News Sunday.”

The South Carolina Republican said the decimation of Hezbollah and Hamas terrorist groups had weakened Iran.

“They are not finished off, but they have been weakened, and there is an opportunity to hit the Iran nuclear program in a fashion I haven’t seen in decades,” he said. “I think it would be in the world’s interest to decimate the Iranian nuclear threat while we can.”

“If we don’t, we will regret it later,” Mr. Graham added.

President Trump’s return to office has renewed concerns that Israeli Prime Minister Benjamin Netanyahu might be more apt to carry out a military strike against the Iranian nuclear program.

Mr. Trump told reporters last month it would be “nice” if the nuclear crisis could be solved without “having to go that further step.”

“Iran will hopefully make a deal, and if they don’t make a deal that’s OK too,” the president said.

• Seth McLaughlin can be reached at smclaughlin@washingtontimes.com.