territory. this is with the help of more than 200 air strikes by the u.s.-led coalition in iraq in the last month. commanders say they are going up against 600 isis fighters in sinjar. we have our senior international correspondent nick paton walsh live by phone. nick, you have been inside sinjar to see for yourself. >> reporter: remarkable devastation. let me explain how we got there. earlier today, large numbers of peshmerga arrived to make the move to the west as well. hundreds of them on foot moving in toward the city center. they moved in on isis positions and also at one point, this city has been riddled with explosive devices by isis. everywhere you look, there is