i m candy crowley. and this is state of the union. the afghan government says the man who killed two american soldiers inside a highly secured government african building is an intelligence officer. hamid karzai has offered condolences of the families of the four americans killed since news that u.s. personnel apparently inadvertently burned copies of the koran at an air base in afghanistan. karzai called for calm in his country but insisted the u.s. must prosecute those responsible for burning the muslim holy book. joining me from kabul, u.s. achl bass door to afghanistan, ryan crocker. mr. ambassador, let me ask you first, the u.s., over more than ten years, has spent half a trillion dollars in afghanistan, almost 2,000 american lyes have been lost. and the american people wake up this morning to find that two high military officers sitting inside a secured afghan government building were murdered, basically, by someone who was, you know, freely walked into that buildin