i don't ever judge anybody else. >> reporter: at the end of this month, they will give up their training role, a new mission as the u.s. preepairs for a complete withdrawal in two years. >> the u.s., we saw how they resolve with the advance of isis. why are you confident that afghan forces will perform better? >> they want us to help them askis, advise, train. how are we left, iraq was totally different. the iraqi government did not want us there. the iraqi people did not want us there. it is training, advise, assist. but u.s. forces will be able to do force protection and go out and future trallize that threat. in addition, you mentioned combat enabling. how much danger will u.s. troops be as they transition out of an official combat role?