Mark Esper says he "didn't see" specific evidence showing Iran planned to strike 4 U.S. embassies

The defense secretary provides background on what President Trump called an "imminent threat" to U.S. embassies overseas.

Mark Esper says he "didn't see" specific evidence showing Iran planned to strike 4 U.S. embassies
The defense secretary provides background on what President Trump called an "imminent threat" to U.S. embassies overseas.