As Iran tightens its grip on the Strait of Hormuz, Washington faces dwindling weapon stockpiles, rising domestic anger and a high-stakes struggle over global trade routes.

The Islamic republic is determined to retain a degree of control over the choke point, as a draft agreement to reopen the waterway enters its final stages.

Iran proposed control of the Strait of Hormuz, reducing market confidence in a U.S.-Iran agreement to 39% YES by August 31.