Source: National Geospatial Intelligence Agency. By Gene Thorp - The Washington Post. From The Washington Post:
To lessen its dependence on Pakistan, the U.S. military has greatly expanded its use of supply lines through Russia and Central Asia to deliver equipment and material to the war zone in Afghanistan. Those routes, known collectively as the Northern Distribution Network, are much more circuitous and expensive than the supply lines through Pakistan but are also considered more stable.
My Comment: This may be a "logistical miracle" .... but it is an expensive one.