know that the air strike, they're killing some of them, but, you know, because the isis make in raqqah cityot allow people unless over 45 years old to leave the city. most people are prisoners. so most of them are between the civilians and the neighborhoods. so it's very difficult to defeat them. if you want to defeat them, you must send troops on the ground. and i'm sure that most of the west and europe don't want to send troops on the ground because it will be a big problem, a lot of blood, massacres. if there are air strikes within the city, a lot of civilians will die. >> i want to get one more question. >> this is fareed zakaria. what are the isis guys like? the young men who are joining up, are they very religious? are they young men who enjoy the power? how would you describe them? >> caller: i think most of them are isis are laughing. because when they are publishing their propaganda video they think, in raqqah city is like a paradise, an islamic caliphate and stuff like that. but when they enter and the islamic state that they're a terrorist group, they're just killing civilians, c