President Donald Trump announced a 25% tariff on any country doing business with Iran, applying the levy to trade with the United States. The move is pitched as a pressure tactic against Tehran amid ongoing anti-government protests. The tariff is said to be effective immediately, signaling a rapid escalation in the administration's approach to Iran. Analysts caution that the policy could ripple across global markets and complicate relations with allies who have engaged with Iran. Supporters argue the measure underscores US resolve to use economic tools to push for political change in Tehran. Critics warn the policy may fall short if sanctions on Iran lead to retaliation or unintended consequences for consumers and global supply chains. Questions remain about the implementation, exemptions, and practical impact of this sweeping tariff.