In Afghanistan, a US airstrike killed 16 police personnel and injured two others in Helmand province. Officials said today that the incident took place yesterday as Afghan security forces were clearing a village of Taliban elements. It occurred in Gereshk district in Helmand, large parts of which are under Taliban control. <br/>The US is the only foreign force in the coalition conducting airstrikes in Afghanistan. <br/><br/>There have been a series of incidents involving US airstrikes and Afghans. In February, a US airstrike in Sangin killed at least 18 civilians, mostly women and children. Last November, 32 Afghan civilians were killed in a US airstrike in the northeastern province of Kunduz.<br/>