For an interesting analogy, the reconstruction in Afghanistan has many of same problems as our post-nuclear war scenario. They are constructing an electrical, sanitation, medical, transportation, communications, manufacturing and water infrastructure from scratch. The food production has been devastated by drought and war. Heavily armed Warlords fight for control of the limited resources. Yet they are making progress, particularly in the areas where the local government is strong. Of course, they have a huge advantage in being able to import food and high-tech resources—whereas a post-nuclear US would have to rely on what remains of its own capabilities.