US Treasury Secretary Scott Bessent has said that the United States is entering an “economic D-Day” against Iran following what he described as the Trump administration’s dismantling of the Islamic Republic’s military and nuclear capabilities, Anadolu Agency reports.

“President (Donald) Trump has dismantled Iran’s military capabilities, destroyed nearly 100 percent of its military factories, and buried its nuclear program,” Bessent said in a post on the US social media platform X.

“We are now entering the endgame. At dawn begins an economic D-Day — the single greatest financial offensive ever marshaled against an adversary.”

Bessent said the administration intended to utilise every available resource to further isolate Iran economically and cut off sources of support for the Iranian government.

“The President has created the conditions to leverage every agency, every authority and action many assumed we would never summon. Our objective is to sever every economic lifeline that sustains the tyrannical regime until Tehran stands alone,” he said.

He also warned governments and other actors against assuming that Washington would be unwilling to impose costs on those challenging its Iran policy.

“The Islamic Republic has subsisted by dressing extortion as security guarantees. It has drawn strength from a calculus that regards Iranian retaliation as certain and American enforcement as negotiable. Under President Trump, that era is over. And those who fear the danger of defying Tehran ought not to discount the cost of testing Washington,” he said.