Are grave consequences inevitable?

Will Iran’s naval moves sink nuclear deal?

The U.S. Navy has sent a destroyer in response to the Maersk Tigris’s distress call, as well as a maritime reconnaissance aircraft, leading to the second potential showdown between the American and Iranian navies in less than two weeks. A little more than a week ago, Iran sent a nine-ship convoy to the Gulf of Aden in a suspected attempt to resupply the Shiite Houthi rebels in Yemen. A U.S. aircraft carrier and a destroyer headed to the same waters until the Iranians turned back.