From the BBC:
BBC NEWS | South Asia | Militants torch Afghan suppliesMore than 90 lorries supplying Western forces in Afghanistan have been set on fire in a suspected militant attack in north-west Pakistan, police say.
Police said at least one person was killed as more than 250 gunmen using rockets overpowered the guards at a terminal near the city of Peshawar.
Almost 75% of all supplies for Nato forces in Afghanistan come through Pakistan, the majority through Peshawar.
IMO, this is a very serious issue that, if not corrected, could have strategic military implications for the ongoing fight to stabilize and secure Afghanistan for several reasons:
1. Post-Musharraf Pakistan is a slowly decaying state. Central power is eroding; the relative position of radical Islamist elements e.g., the Taliban is increasing in the emerging vacuum being created by receding centralized power.
2. U.S. failure to support former President Musharraf has helped to further demoralize Pakistan's military. Its reduced counterterrorism operations suggest the military is less willing to run large risks for the U.S.
3. If the resupply problems persist, the U.S. and NATO could eventually face a tough choice between trying to secure key areas in Pakistan on their own--and government permission would all but certainly not be forthcoming--or shifting resupply centers outside of Pakistan (a very difficult logistics challenge). A gradual but steady shift to supply alternatives from outside of Pakistan would make sense.
4. In coming weeks and perhaps longer, Pakistan's weakening government will almost certainly place priority on risk management with India in the wake of the Mumbai terrorist attacks. Pakistan has a vital interest in avoiding war with India. This shifting of priorities could further free up the proverbial playing field for the radical Islamists.