The Pakistani army is locked in a fierce battle to stop fuel and arms supply routes to British and American forces in Afghanistan falling under Taliban control.
You cut an armed force off at the knees when you cut off its supply routes.
If the Pakistanis lose this battle, that will make it very difficult, if not impossible, for US and NATO forces to hold their positions.
Unfortunately, the US and NATO have never had, according to the US's own military protocol anywhere near enough soldiers to successfully handle this occupation.
As reported on 2 June, 2008 in
"The outgoing US commander of NATO troops in Afghanistan says it would require 400,000 troops to secure that country."
"ISAF Commander McNeill has said himself that according to the current counterterrorism doctrine, it would take 400,000 troops to pacify Afghanistan in the long term. But the reality is that he has only 47,000 soldiers under his command, together with another 18,000 troops fighting at their sides as part of Operation Enduring Freedom, and possibly another 75,000 reasonably well-trained soldiers in the Afghan army by the end of the year. All told, there is still a shortfall of 260,000 men."
And why have we not had enough soldiers to do this successfully?
A lethal combination of magical thinking, and military history amnesia.
The last time the US attempted to win what was absolutely a ground war from the air was during the Viet Nam War.
Let that sink in for a moment.