An airstrike hit a hospital run by Medecins Sans Frontieres in the Afghan city of Kunduz on Saturday, killing at least 16 people in what the U.S. military called possible "collateral damage" in the battle to oust Taliban insurgents. Frantic MSF staff phoned military officials at NATO in Kabul and Washington after the attack, and bombs continued to rain down near the medical facility for nearly an hour, one official from the aid group said. At least 37 people were wounded and many patients and staff still missing, it added. The U.S. military promised to investigate the incident, which could...