green on blue attacks
Oct 1, 2012 — In another incident, a firefight between NATO and Afghan troops left at least two Americans dead. Confusion, not an "insider attack," may have sparked the deadly exchange. The number of U.S. military and civilian personnel killed in Afghanistan since late 2001 has now passed 2,000.
Sep 18, 2012 — "Green on blue" attacks have continued. And today, a suicide bomber killed at least 12 people — a militant group said the attack was to avenge the anti-Islam video Innocence of Muslims. NATO says it is reducing coalition troops' vulnerability.
Sep 16, 2012 — The U.S. troops were killed by an Afghan officer at a remote checkpoint. Eight NATO troops have been killed in similar insider attacks over the past three days. In the attack on which the women were casualties, the alliance said 45 insurgents were killed.