US President Donald Trump has announced the imposition of a 25 percent tariff on goods imported from countries that maintain commercial relations with Iran, escalating Washington’s economic pressure on Tehran.

According to President Trump, the new tariff will take effect immediately. The announcement was made via a post on his Truth Social account, where he reiterated his administration’s hardline stance against Iran.

The decision follows Trump’s recent warning that the United States could intervene militarily if Iranian authorities continue to kill protesters amid ongoing unrest in the country. The tariff measure is seen as part of a broader strategy aimed at isolating Iran economically and diplomatically.

Analysts say the move could have wide-ranging implications for global trade, particularly for countries that continue to engage in energy, manufacturing, or financial transactions with Iran despite existing sanctions.

While Washington has previously used secondary sanctions to deter foreign trade with Iran, the blanket tariff represents a more aggressive approach that could affect allies as well as competitors of the United States.

There has been no immediate response from Tehran or from countries likely to be impacted by the new tariff. Observers expect the measure to intensify tensions between the US and Iran, while also complicating international trade relations.