Where did U.S., Iran tensions begin, and where are they headed?

Before the U.S.-ordered drone strike that killed General Soleimani, Defense Secretary Mark Esper had vowed "the game has changed" when it comes to relations with Iran. What led to the Baghdad embassy attack, and where does Congress stand on the use of military force? Kelley Vlahos from The American Conservative joined Jim on "The Final 5" to explain.