Collateral damage:

An air strike hit a residential building in eastern Afghanistan early Wednesday, killing 13 civilians, an Afghan official said. Most air strikes in Afghanistan are carried out by the United States, and while Afghanistan has its own warplanes, another Afghan official said they had not carried out any strikes in the area. The U.S. military said it had carried out a “counterterrorism air strike” in Nangarhar province, and was investigating reports of Afghan casualties.