Missile Shipment To Syria Complicates Kerry's Push For Peace

Syrian President Bashar Assad says his country has received advanced missiles from Russia. The Russians say they are just fulfilling old contracts and argue that the S-300s are a defensive system that can't be used against rebels. But the timing of this shipment complicates Secretary of State John Kerry's work with Moscow on pushing for a peace conference. The U.S. and Russia seem to be working.