. >>> please welcome peter burgen back to the program since he produced an interview 20 years ago, he's been tracking foreign and domestic threats to the u.s. government as cnn's national security analysts. his latest text in paper book, the united states of jihad, who are america's terrorists and how do we stop them? peter, good to have you back on the program. let me jump in, what are america's homegrown terrorests and why do we never talk about them versus the other guys? >> you know, i mean, 9/11 was one of the events of american history and of course, 19-hour foreign terrorists so i think the framing of the problem is mostly being this is a problem for people coming into the country. president donald trump, you know, talks about refugees and banning travel, but in fact, the problem now is really americans overwhelming -- all the lethal terror attacks in the united states have been conducted by american citizens. it's a domestic problem and of course, then you have also right-wing terrorists. you have -- we have just had recently in alexandria, virginia, somebody who appears to have