
Flames rise from tankers carrying oil for NATO forces in Afghanistan, after they were attacked by Islamic militants, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

Flames rise from tankers carrying oil for NATO forces in Afghanistan, after they were attacked by Islamic militants, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

A Pakistani journalist films the scene after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

Pakistani firefighters try to extinguish flames after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

Pakistani firefighters try to extinguish flames after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked a NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/MUSA FARMAN

A Pakistani journalist films the scene after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked the NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/MUSA FARMAN

Pakistani firefighters try to extinguish flames after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

Pakistani firefighters try to extinguish flames after suspected Islamic militants attacked tankers carrying oil for NATO forces in Afghanistan, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked a NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN

Flames rise from tankers carrying oil for NATO forces in Afghanistan, after they were attacked by Islamic militants, on the outskirts of Quetta, Balochistan province, Pakistan 06 October 2010. Pakistan has already blocked NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier. US and NATO forces in landlocked Afghanistan get around 75 per cent of their food and military supplies through Pakistan. EPA/WAHEED KHAN