The Strait of Hormuz is between Oman and Iran, which boasts a fleet of fast-attack boats and thousands of naval mines as well as missiles that it could use to make the strait impassable, at least for a time.

Oil prices eased off a 5-month high as expectations Iran won't close the Strait of Hormuz for now. But this may still change, they warned.

An Iranian closure of the Strait of Hormuz would be dangerous and "not good for anybody", the European Union's top diplomat said on Monday. "The concerns of retaliation and this war escalating are huge,

F.B.I. and D.H.S. officials cautioned state and local law enforcement of the possibility of threats to U.S. communities.

Fox News senior correspondent Mike Tobin reports on IDF strikes knocking out power in parts of Tehran and Hezbollah sites in Lebanon. Israeli ambassador to the U.S. Danny Danon reacts as President Donald Trump hints at a 'regime change' in Iran.

Demonstrators gathered in cities across the U.S. to protest against U.S. strikes on Iranian nuclear sites.