Six US soldiers have been killed in separate incidents in Afghanistan, Nato has said.
Three died in eastern Afghanistan and two were killed in separate roadside bombings in the south of the country.
More than 350 Nato soldiers have been killed this year as the Taliban steps up its campaign.
In other violence, gunmen killed 11 Pakistani Shia tribesmen in the east and one person was killed by a motorbike bomb in Kandahar.
Also on Saturday, hundreds of Afghans took to the streets of the northern city of Mazar-i-Sharif in protest at increasing civilian deaths
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