Good evening and it is great to have you with us on this busy wednesday night. We begin with the breaking news here. President obama and his message to america, just a short time from now. Laying out his plan to take down isis, the brutal killers who executed those two american journalists, james foley and steven solt lof. Tonight, three weex after the first of those grisly videos surfaced, the killers still on the loose. At this hour, president obama facing a defining moment. Our team getting a first look at what hell say to the american people. Just 14 dames ago, he say, we dont have a strategy yet about isis in syria. So many asking, do we have one now and what will it mean for u. S. Troops . We have Team Coverage tonight. George stephanopoulos standing by an our entire team. We begin with Jonathan Karl tonight. Jon, good evening. Reporter good evening, david. After weeks of muddled and contradictory statements, the president will say tonight that he has a clear and comprehensive st