U.S. forces in Afghanistan will "back off" from firing at insurgents if the fighters are using civilian buildings as cover, the U.S. commander in eastern Afghanistan told CNN. "I've given direct guidance, and so has my boss to me, that if there's any doubt at all that the enemy is firing from a house or building where there might be women and children, that we'll just back off," Maj. Gen. Jeffrey Schloesser, the commanding general of the 101st Airborne Division, told CNN's Barbara Starr. "That potentially is something that we did not do before, but now because of this increased...