At the narrow passage where a third of the world's seaborne oil has long flowed, Iran has drawn a new line — announcing a restricted maritime zone near the Strait of Hormuz and conditioning the waterway's openness on an end to American military pressure. The move is less a sudden rupture than the formalization of a standoff already playing out in shipping data and damaged hulls, as commercial traffic has fallen to its lowest sustained levels in months. Tehran frames its posture as restrained capability rather than aggression, naming targets it has chosen not to strike and citing environmental