More than 2,100 civilians were killed in Afghanistan last year, 40 percent more than 2007, the United Nations says, a further sign of worsening security seven years after U.S.-led forces toppled the Taliban.
While 55 percent of the victims were killed by Taliban insurgents and their allies, one-quarter of all civilian casualties -- 552 people -- died as a result of air strikes by U.S. and NATO-led forces in Afghanistan.
"The growing death toll...is of great concern to the United Nations," the UN mission in Afghanistan said in a report. "This disquieting pattern demands that the parties to the conflict take all necessary measures to avoid the killing of civilians."
Read more about the UN report here