Afghans kill three Nato troops

Afghan security forces shot and killed two British troops and one American in two separate incidents, the latest in a rising number of attacks in which Afghan forces have turned their weapons on their foreign partners.

Yesterday’s killings of Nato personnel reflect a spike in tensions between Afghan and international forces that follow an American soldier’s alleged massacre of Afghan civilians, the burning of Muslim holy books at a US base, and uncertainty about Afghanistan’s fate as foreign troops prepare to pull out.