we're back with democratic congressman seth, stand by because we're following breaking news, a new worldwide travel alert is issued by the state department warning all americans around the world of an increased terror threat. let's go to nick paton walsh in northern iraq right now and nick, you got very close to the self-proclaimed isis capital in syria raqqah, tell us how that went. >> reporter: well, it is remarkable to see almost unnoticed how much progress the forces made. they basically isolated i sisis territory and pushing down south