"An Afghan civilian employee shot three soldiers, all from the US, at a base in Helmand province on Friday evening.
Earlier on the same day, also in Helmand, an Afghan police officer shot three US marines after inviting them to dinner at a checkpoint. The suspected killers in both attacks were detained, the US military says.
The killing of two British soldiers in Helmand was also announced on Friday, bringing to eight the number of coalition soldiers killed in Helmand in 48 hours. There is mounting concern over attacks on Nato troops by their Afghan allies.
Members of the Afghan security forces have killed 34 international coalition soldiers this year, in 26 incidents, US military spokeswoman Maj Lori Hodge told the BBC. " BBC
Is the Taliban strategy to kill as many NATO people as possible in the belief that this will eventually wear down NATO's will to continue? That appears to be the case. If it becomes true that NATO personnel cannot trust the people they are training and advising, then that is probably an effective method. pl