
US President Donald Trump announced 50 percent tariffs on countries supplying Iran military weapons, posted on social media Wednesday. The threat came hours after agreeing to a two-week ceasefire with Tehran. Trump did not specify legal authority for the tariffs. The Supreme Court struck down his use of the International Emergency Economic Powers Act in February, ordering refunds of $166 billion in collected tariffs. China and Russia have supplied Iran military technology. Experts question implementation feasibility.