this fight is not over. it will remain a multi-year effort. >> reporter: multi-year effort because they still want to go after the self-proclaimed capital of raqqah. that's yet to come. when you look at the proliferation of isis cells and supporters and lone wolf attacks across europe, even here in the united states, that still is a very big problem. but he did talk about some success they have had to that end, that they did go after three leaders in raqqah, syria that were involved in the attacks in paris and planning attacks in brussels. those three leaders were killed. so they are making great gains against isis and its leaders on the battlefield in iraq and syria, but isis still remains a threat not only in the middle east but also to europe and the united states. >> very soon, donald trump will be taking on and heading up the mission to battle isis. great to see you. thank you. so donald trump is also hosting today who's who of tech executives at trump tower. one big name is missing.