The US’ need for a highly measured, or even lack of response from Israel cannot be overstated. 

The United States is expected to designate Iran's elite Revolutionary Guards Corps a foreign terrorist organization, three US officials tell Reuters, marking the first time Washington has formally labeled another country's military a terrorist group.

Iranian President Hassan Rouhani reiterates on Sunday that Tehran would remain committed to its 2015 nuclear deal if its interests can be protected and says the US withdrawal from the accord is a "violation of morals".

A rocket-bearing Iranian military vessel has confronted an American battleship in the Gulf and warned it to stay away from a damaged Iranian fishing boat, but the US Navy denies any direct contact with Iranian forces.