Afghan attacks at a glance

A look at attacks in which Afghanistan security forces turned on their NATO counterparts:

— Nov. 29: An Afghan border police officer opened fire on NATO troops during a training mission in Nangarhar province, killing six NATO service members before he was shot dead.

— July 20: Afghan army sergeant got into an argument at a shooting range in northern Afghanistan's Balkh province and shot dead two American civilian trainers before being killed. Another Afghan soldier was killed in the crossfire.

— July 13: Afghan soldier stationed in the south killed three British troopers, including the company commander, with gunfire …