"Pakistan on Thursday blocked a key NATO supply line into Afghanistan after accusing US-led forces of mistakenly killing three Pakistani paramilitary border troops in a helicopter raid hours earlier.

The events are testing the already fragile US-Pakistan alliance against Al Qaeda terrorists and Taliban militants holed up in remote, rugged mountain terrain in northwestern Pakistan tribal areas.

They come also as details continue to emerge of an alleged large-scale terror plot against targets in Europe hatched by Pakistani-based militants that was reportedly disrupted in its early stages by Western intelligence and air strikes in Pakistan. Some reports said the United States and NATO's stepped-up air attacks were aimed at the plot's planners. . . "
Pakistan seals off NATO supply line to Afghanistan after US air attack - CSMonitor.com (external - login to view)