Motorists drive past an anti-US billboard in Tehran on August 24, 2026. Iran responded with defiance on August 24 to a US threat of the "single greatest financial offensive ever", saying it was an admission of military defeat and warning countries against aiding Washington. Photo: AFP / Lehtikuva

International news

The United States is preparing a new sanctions campaign against Iran as Tehran threatens to stop oil exports from the Gulf and retaliate against countries that support Washington. The measures come six months into the US-Israeli war against Iran, with shipping through the Strait of Hormuz restricted and diplomatic efforts under way.

US Treasury Secretary Scott Bessent is due to announce the measures on Monday.

He described the planned campaign as an “economic D-Day” and said Washington intends to sever Iran’s remaining sources of revenue.