Russia used an Iranian air base to launch air strikes in Syria for a second day running on Wednesday, rejecting U.S. suggestions its co-operation with Tehran might violate a U.N. resolution. Russia’s Defence Ministry said that SU-34 fighter bombers flying from Iran’s Hamadan air base had struck Islamic State targets in Syria’s Deir al-Zor province, destroying two command posts and killing more than 150 militants. Moscow first used Iran as a base from which to launch air strikes in Syria on Tuesday, deepening its involvement in the five-year-old Syrian civil war and angering the United States.
http://www.reuters.com/article/us-mideast-crisis-russia-iran-idUSKCN10S0VB