2011 has seen a growing trend in Afghanistan; Afghan government troops turning on U.S./NATO troops.  On December 24, three U.S. soldiers were shot and killed by an Afghan soldier, after an argument at a training base in Pusht-Rod district of the western province of Farah.

Five other U.S./NATO troops were wounded, one Afghan soldier was killed another wounded.

In November an Afghan soldier wounded at least three Australian soldiers in southern Uruzgan province.  In April an Afghan air force pilot killed eight U.S./NATO soldiers at Kabul airport.