Andrea Mitchell Reports 01/04/16

Saudi Arabia and Iran sever diplomatic ties

Saudi Arabia and Iran, two power players and rivals in the Middle East region, have severed diplomatic ties and continue to exchange heated rhetoric. The tension comes as a result of Saudi Arabia's execution of a prominent Shiite cleric. Richard Haass, President of the Council on Foreign Relations, outlines more of the circumstances as well as the role of the U.S. in the crisis. ... more Duration: {{video.duration.momentjs}}