US adviser killed in Kabul

Kabul's Police are currently investigated the killing of an American adviser at the hands of an Afghan policewoman during an incident at their police headquarters. Kabul's Deputy Police Chief Mohammad Daoud Amin said an investigation is under way to determine whether the killing was intentional or accidental.

Sky News reports that it is not known whether the victim was a military or civilian adviser. The NATO military command said it is looking into reports of the shooting, but had no independent information.

At least 53 international troops have been killed by Afghan soldiers or police this year, and a number of other assaults are still under investigation.

NATO forces, due to withdraw from the country by 2014, have speeded up efforts to train and advise Afghan military and police units before the pullout.

According to Sky News, the surge in insider attacks is throwing doubt on the capability of the Afghan security forces to take over from international troops and has further undermined public support for the 11-year war in NATO countries.

More than 50 Afghan members of the government's security forces have also died this year in attacks by their own colleagues.

Taliban militants claim such attacks reflect a growing popular opposition to both foreign military presence and the Kabul government.