The 10 consecutive nights of U.S. airstrikes haven’t compelled Tehran to loosen its grip on the strait, through which about a fifth of all crude oil and natural gas traded once passed in peacetime.

The fighting between the Iran-backed Houthi militia and Saudi-backed government forces has exacerbated one of the world’s ...

Iran raised the initiative, which proposed to end hostilities in the Persian Gulf within seven days, at the U.N. General ...