Saudi government says Iran is planning an attack on Saudi Arabia

Sources tell CBS News the Saudi government has warned the U.S. that Iran is planning a drone strike against Saudi Arabia's oil infrastructure, because Tehran believes Riyadh is meddling in ongoing protests across Iran. Former U.S. Ambassador to Saudi Arabia Robert Jordan spoke with Anne-Marie Green and Vladimir Duthiers on CBS News about how serious of a threat this really is and how the U.S. is responding.