A man dressed in an Afghan army uniform opened fire Tuesday on foreign troops at a military base, killing at least one U.S. soldier and wounding 15 people, among them a German brigadier general and “about a dozen” Americans, authorities said. U.S. officials said later Tuesday the American killed was a major general, the highest-ranking member of the U.S. military killed in the conflict. A total of 15 people were injured in the attack, about half of which were Americans, the officials said. Details about the attack at Camp Qargha, a base west of the capital, Kabul, weren’t immediately clear. Gen. Mohammmad Zahir Azimi, a spokesman for Afghanistan’s Defense Ministry, said a “terrorist in an army uniform” opened fire on both local and international troops. Azimi said the shooter had been killed and that three Afghan army officers were wounded/Associated Press. More here. (AP photo: A NATO soldier opens fire in an apparent warning shot in the vicinity of journalists near the main gate of Camp Qargha, west of Kabul, Afghanistan, today)

Question: Remind me again -- why are we still in Afghanistan?