In the world’s most vital oil chokepoint, the elegant certainties of maritime law dissolve into a murky contest of power, risk and coercion. The Strait of Hormuz is, in the dry language of international law, a “strait used for international navigation.” In the less sterile vocabulary of geopolitics, it is a loaded gun pointed at the global economy. Barely 21 nautical miles wide at its narrowest point, this corridor connects the oil-rich Persian Gulf to the wider Arabian Sea.