The United States is launching what it has branded "operation economic outcast" against Iran as Washington seeks to sever Tehran's financial lifelines amid the ongoing war.

In a press conference on Monday, Treasury Secretary Scott Bessent outlined a new, "unprecedented campaign" against Iran and its "enablers," describing it as an "economic onslaught" aimed at isolating the Iranian regime.

"Treasury has mapped every node, every facilitator, and every network that Iran has used to smuggle oil and evade sanctions," he said. "Beginning today, the actions of Treasury and other agencies will tighten the noose and block every potential source of revenue that funds the IRGC and the evil Iranian regime".

"Any entity that facilitates money laundering on behalf of Iran will be removed from the US dollar system," he continued.

Bessent added that US President Donald Trump was contacting unspecified world leaders requesting that they stop working with Iran.