A suicide bomb attack on an international military convoy in the Afghan capital Kabul has killed at least 17 people, including 13 US troops.
All 13 members of the Nato-led International Security Assistance Force (Isaf) killed in the attack near Darulaman Palace, on the south-west outskirts of Kabul, were American soldiers, according to a US official.
"We can confirm that 13 International Security Assistance Force members have died," said an Isaf spokesman.
The Taliban claimed responsibility for the attack, which also killed four Afghans, including a policeman. The deputy police chief added that another three policemen were wounded in the attack.
Two Nato helicopters landed at the scene to airlift several casualties. Other victims were treated on stretchers laid out on the pavement.
Violence across Afghanistan is at its worst since the start of the war 10 years ago, according to the United Nations, despite the presence of more than 130,000 foreign troops.