US Senator Lindsey Graham has said that he supports an ultimatum from US President Donald Trump to unleash “all hell” on Iran if they do not reach an agreement within 48 hours.

“A massive military operation awaits Iran if they choose poorly,” Graham has said on X. “This regime has been severely crippled through Operation Epic Fury. Their reign of terror against the region and the world needs to come to an end, hopefully through a peace deal.”

He adds that after having spoken with the president, he is convinced Trump will “use overwhelming military force against the regime if they continue to impede the Strait of Hormuz and refuse a diplomatic solution to achieve our military objectives”.

“If it’s not clear to Iran and others by now that President Trump means what he says, then I don’t know when it will ever be,” Graham adds, urging Tehran to “choose wisely”.