The Afghan army commander motioned the American lieutenant into his office. Lt. Col. Attaullah was 48, with gelled hair, blue-framed eyeglasses and the rigid bearing of a communist general. A Pashtun from Konduz and a veteran of Najibullah’s army in the 1980s, he wore his camouflage uniform buttoned tightly at the neck, displaying the gold braid on his collar to advantage. He shook the American officer’s hand and sent one of his soldiers to bring tea.