joining us now is michael weiss, senior editor for new alliance magazine, the co-author of "isis: inside the army of terror." michael, thank you very much for being here. for the audience who doesn't know, what is isis-k and what is its relationship with the taliban? >> so isis-k was formed in 2014. many of its top ranking members were actually disaffected members of both the afghan taliban and the pakistani taliban. these are guys who think that the taliban who now rules afghanistan was too cuddly for their liking. the taliban has always been seeking to establish a so-called emirate to control the nation state of afghanistan. isis's mission is deeply more ideological. they look to establish their so-called caliphate throughout the world. they will not stop, as they have said repeatedly, since even before 2014, when the u.s.-led