Nato says its forces in Afghanistan have killed at least 19 Taliban fighters who tried to storm a combat outpost under cover of darkness.
The attack happened at a base in Paktika province, bordering Pakistan.
The militants are reported to have attacked from all directions, using rifles and rocket-propelled grenades.
Meanwhile, President Hamid Karzai has criticised the first joint operation by Russian and US agents to destroy drug laboratories in Afghanistan.
Mr Karzai said Thursday’s raid had taken place without his government’s permission and was a clear violation of Afghan sovereignty.
A Russian official said about 70 military personnel and counter-narcotics agents were involved, and that they had destroyed a “major hub” about 5km (three miles) from the Pakistani border, near Jalalabad.