CNN The Situation Room May 5, 2015 21:24:00
Let's get back to our top story. isis says it was behind the attack on a controversial prophet muhammad event in texas. and u.s. investigators work to determine how big of a role the terror group actually played. joining us now our cnn security analyst, peter bergman, a and our military analyst, retired lieutenant general mark hurt ling. was this the first successful isis attack in the u.s.? >> i'm a skeptic on this. when we faced 99/11 and hads the attempted bombing over detroit, he was involved with the al qaeda affiliate in yemen.