Trump says nations doing business with Iran face 25% tariff on US trade

In this frame grab from footage circulating on social media shows protesters dancing and cheering around a bonfire as they take to the streets despite an intensifying crackdown as the Islamic Republic remains cut off from the rest of the world, in Tehran, Iran, Friday, Jan. 9, 2026. Picture: UGC via AP)

President Donald Trump said on Monday any country that does business with Iran will face a tariff rate of 25% on any trade with the US, as Washington weighs a response to the situation in Iran, which is seeing its biggest anti-government protests in years.

"Effective immediately, any Country doing business with the Islamic Republic of Iran will pay a Tariff of 25% on any and all business being done with the United States of America," Mr Trump said in a post on Truth Social.