Two soldiers in the NATO-led force helping the Afghan government fight an insurgency were killed on Tuesday in the volatile south of the country, the military said.
NATO's International Security Assistance Force did not say how the soldiers died nor did it give their nationalities.
"Two ISAF servicemen were killed on tuesday in southern Afghanistan," it said in a statement.
Southern Afghanistan is a notorious hotspot for the Taliban-led insurgency, with several districts out of government control.
There more than 22,000 foreign soldiers in the south, most of them American, British, Canadian and Dutch.
The latest deaths take to 21 the number of international soldiers to die in Afghanistan this year, according to the icasualties.