The US Navy has intercepted and boarded the Iranian container ship Toska in the Gulf, marking the first vessel seized since Washington imposed a naval blockade on Iranian ports. President Donald Trump announced on his Truth Social platform that the ship ignored repeated warnings over six hours before the USS Spruance disabled its propulsion system and Marines rappelled aboard from helicopters; Trump added that the ship had previously been sanctioned by the US Treasury for unlawful activity. Iran condemned the action as "armed piracy" and a violation of ceasefire terms, vowing retaliation — raising fears of broader escalation in a strategically critical waterway.