Pentagon officials are trying to prepare for all of the ways Iran could retaliate, as President Trump hints at what he might do.

Israeli aerial bombardment has wiped out much of Iran’s ballistic missile capability and decapitated its military command, but Supreme Leader Ali Khamenei has refused to stop fighting, even promising “irreparable damage” to the US if it intervenes in the conflict in support of its staunch ally.

Conflict between Israel and Iran has rekindled fears of a disruption to a narrow waterway key to the global economy. Skyscraper-sized tankers ferry roughly one-fifth of the world’s petroleum, as well as massive cargoes of natural gas,