An article in The Economist on the Pak-US relationship crisis (covered on another thread) contains this section, which I assume is based on briefings:
In the past few months NATO—and especially the Americans—have done an impressive job of reducing their reliance on land transport corridors through Pakistan to supply Western soldiers in Afghanistan. Over the past 120 days, for example, of the materiel received by the Americans in Afghanistan, around 30% was flown in and 40% was driven over Afghanistan’s northern borders from Central Asia, leaving just 30% to come via Pakistan's roads. That is a sharp reduction on previous years. Thus the immediate and predictable closing of the Pakistan route, in response to the deaths on the border, should prove less disruptive than it once would have been.
Link:http://www.economist.com/blogs/banya...erica?fsrc=rss