BBC NEWS :
Lorry drivers in north-west Pakistan say they will no longer deliver supplies to Nato and US-led forces in Afghanistan due to worsening security.
The move follows a spate of hijackings and attacks on their vehicles by Taleban militants.
At least 75% of overland supplies to foreign forces in Afghanistan travels through North-West Frontier Province.
The supplies are critical for troops in an increasingly drawn-out campaign against Taleban insurgents.