Two NATO service members were killed in a bomb blast in southern Afghanistan on Sunday, the military alliance said.
NATO said the troops were killed by an improvised explosive device, but provided no further details. The nationalities of NATO deaths are not generally released until after the next of kin have been contacted.
This year is already the deadliest of the war, with more than 530 international forces killed.
NATO also said it launched an air strike late Saturday in Kunar province, along the Pakistan border, that targeted a senior al-Qaida commander who coordinates a group of Arab fighters in the area, saying he routinely helped them travel into the region.
It did not say whether the commander was killed in the attack, but said his compound was destroyed. It said collateral damage was kept to a minimum, but did not provide further information.