what they want to do the most is they want to have a large airplane blow up in flight. reporter: isis has already taken credit for blowing up a russian airliner two years ago, killing more than 200 people, claiming the bomb was hidden in a soft drink can. the white house national security adviser says that justifies president trump s disclosures to the russians. this was the context of the conversation in which it was wholly appropriate to share what the threat was as a basis for common action and coordination. reporter: but many in the counterterrorism community say what the president did was a mistake. russia is not part of the isis coalition. they are not our partner. and brian ross with us now. brian reported there that it s believed it was israel, our ally, who gave us that information. lot of people are pointing to the fact if this classified
good to be with you, chuck. as director brennan said, this is a threat we are acutely focused on and one we have been focused on for some time. it s why we can t be complacent, we have to remain vigilant. we have to treat the threat environment as if this is not a one-off. and that s exactly what we re doing. people in my job, people across the counterterrorism community are acutely focused every day on threat streams of the type that director brennan referred to, and that s what we are focused on, and that s what we ll continue to be focused on. i m trying too figure out what was missed here. because for the last year, many people in the administration emphasized isis is not al qaeda. they re more about inspiring lone wolves. paris was a large-scale operation. so what did we miss here? well, chuck, i think what you have heard members of the counterterrorism community say is that isil is a distinct type of threat. it is a new type of threat.