U.S. President Donald Trump announced on Monday, January 12, 2026, that any country engaging in business with Iran will face a 25% tariff on transactions with the United States. The policy, declared via Truth Social, is described as "final and conclusive," escalating Washington's economic measures against Tehran amid heightened geopolitical tensions.
White House Press Secretary Karoline Leavitt reiterated earlier on Monday that diplomacy remains the preferred approach but emphasized the administration's readiness to deploy military options if necessary. "President Trump has always expressed that diplomacy is the first option," Leavitt stated during a Fox News interview. "However, he is unafraid to use the lethal force and might of the United States military if and when he deems that necessary."
The move has drawn immediate scrutiny from global markets, with analysts warning of ripple effects across energy and trade sectors. Business leaders in Asia and Europe are assessing potential disruptions to supply chains, particularly for oil and technology exports linked to Iran. Investors are advised to monitor developments closely, as the tariff could reshape regional alliances and trade dynamics.
This decision marks the latest chapter in the Trump administration's sustained pressure campaign against Iran, which has included sanctions and diplomatic isolation since 2026 began. Observers note that the policy aligns with Trump's broader strategy of leveraging economic tools to advance U.S. foreign policy objectives.
