Trump threatens 25% tariff on countries doing business with Iran

U.S. President Donald Trump said any country that continues to do business with Iran will face a 25% tariff on all trade conducted with the United States, a sharp escalation aimed at increasing economic pressure on Tehran through its international partners.

Details of the Iran tariff decision

According to Reuters , Trump said in a post on Truth Social that the decision was “final and conclusive,” adding that the tariff would take effect immediately against any country found to be trading with Iran.

The U.S. president did not provide legal details or a precise definition of what would constitute “doing business,” raising questions about how broadly the measure could be applied across global supply chains.

Potential impact on global trade

Analysts say the announcement could place several countries in a difficult economic position, particularly those with strong energy or commercial ties to Iran while also relying heavily on access to the U.S. market.

The move is part of a broader U.S. strategy to tighten economic pressure on Tehran. No immediate official responses had been issued by affected countries or by Iran’s government at the time of publication, Reuters reported.

Read also: U.S. tariffs take effect: global impact and escalating trade tensions with China