The US has intercepted an Iranian ship entering the Gulf as part of its naval blockade, US President Donald Trump has said. Trump wrote on his Truth Social platform that the ship was seized by the US Navy after failing to respond to a warning to stop. Iran said it was a violation of the ceasefire and it would retaliate soon for an 'act of armed piracy'. This is the first ship seized by the US since its blockade of Iranian ports began, highlighting the escalating tensions in the region. Here's what we know so far about it.}