Trump Slaps Extra 25% Duty on All U.S. Trade With Countries Dealing With Iran

Washington has used trade penalties to coerce third parties before—the 1806 Non-Importation Act against Britain and France and the 1930 Smoot-Hawley Tariff Act both triggered unintended economic blow-back—but this proclamation revives the tactic on a global digital stage. The move extends a two-decade trend of the U.S. shifting from finance-sector sanctions to broad, transaction-based pressure, treating every customs gate as a lever of foreign policy power. Whether enforced or not, the threat signals to allies and rivals that tariff schedules, once negotiated multilateral instruments, are now variable tools for immediate geopolitical coercion. If replicated by others or upheld by U.S. courts, it could normalise weaponised tariffs and erode the post-1947 rules-based trade system; if it fizzles, it will read as another short-lived experiment like Nixon’s 10 % “import surcharge” of 1971. Either way, on a century horizon it tests the elasticity of the global trading order: do nations continue integrating under predictable rules or fragment into spheres where market access is routinely swapped for political concessions?