REPUBLIKA.CO.ID, KABUL - War took an increasing toll on Afghanistan's civilians in 2013 as fighting intensified between the government and insurgents, the United Nations said in a report on Saturday, with total casualties rising 14 percent.

Last year was the worst for women and children since 2009. The number killed or injured by the conflict increased by more than one-third from 2012. The number of children killed and wounded in Afghanistan's war jumped by 34 percent last year as the Taliban stepped up attacks across the country and continued to lay thousands of roadside bombs, the United Nations said Saturday.

The gradual withdrawal of foreign troops has left Afghan government forces more vulnerable to attack by insurgents, and the resulting battles helped account for last year's rise in casualties, according to the report.

"The new trend in 2013 of increased civilian casualties from ground engagements, including the alarming increase in women and children casualties, reflected the changing dynamics of the conflict over the year," the United Nations said.

"This 'fog of war' dynamic reflects the changed nature of the conflict in Afghanistan in 2013 which was increasingly being waged in civilian communities and populated areas," the United Nations said.

The biggest single killer remained improvised explosive devices (IEDs), or bombs, detonated by insurgents in public areas such as markets, roads and government buildings. Bombs accounted for about one-third of the total civilian toll, which the United Nations put at 2,959 deaths and 5,656 injured.

While both sides in the conflict were responsible for the increase in casualties last year, the United Nations attributed about three-quarters of the toll to the Taliban.

International forces, who have handed over responsibility for security to the Afghans in preparation for their withdrawal by the end of this year, and say they participate only in joint operations, caused about 3 percent of casualties, according to the report.