KABUL, Afghanistan – Violence in Afghanistan fell in 2012, but more Afghan troops and police who now shoulder most of the combat were killed, according to statistics compiled by The Associated Press.

At the same time, insider killings by uniformed Afghans against their foreign allies rose dramatically, eroding confidence between the two sides at a crucial turning point in the war and when NATO troops and Afghan counterparts are in more intimate contact.

“The overall situation is improving,” said a NATO spokesman, U.S. Air Force Lt. Col. Lester T. Carroll. He singled out Afghan special forces as “surgically removing insurgent leaders from the battle space.”

U.S. troop deaths, overall NATO fatalities and Afghan civilian deaths all dropped as insurgent attacks fell off in their traditional strongholds in the country’s south and east. However, insurgent activity was up in the north and west.

U.S. troop deaths declined overall from 404 last year to 295 as of Saturday. The Defense Department says 1,701 U.S. troops have been killed in action in Afghanistan since the U.S. invasion in 2001 until Dec. 26. Of those, 338 died from non-hostile causes. Some 18,154 were wounded.

A total of 394 foreign troops, including the Americans, were killed in 2012, down from 543 in 2011. The British, with the second-largest military presence, had 43 killed — the second-highest toll among countries with forces in Afghanistan, by AP’s count.

The focus of NATO’s mission has largely veered from the battlefield to training the Afghans ahead of a pullout of most troops by 2014. The U.S plans to maintain a residual force, the size of which is now being determined.