The Friday green-on-blue attacks follow a claim purportedly from Taliban leader Mullah Mohammed Omar that fighters are infiltrating Afghan security forces to attack NATO-led forces on their bases.
MORE: http://www.cnn.com/2012/08/17/world/asia/afghanistan-taliban/index.html?hpt=wo_c2
See also...
Attacks kill scores in Afghanistan
http://www.cnn.com/2012/08/14/world/asia/afghanistan-violence/index.html
