There are a number of thorny issues. What about the constitution? The Taliban had no say in drawing it up and are unlikely to accept it as it is. What about women's right to education and employment? The Taliban say they now support these, but that hasn't always been the case in areas where the group dominates.
All this will require the cooperation of the Trump administration, and there's the rub.
If one can believe Bob Woodward's book "Fear," Trump wants out and the US military and the CIA are trying to cut their losses. As one CIA official told Woodward, Afghanistan is not just the grave of empires, it's the grave of careers.
However, Washington has all but declared war on Iran, is in hostile standoffs with Russia and China, and recently cut military aid to Pakistan for being "soft of terrorism." In short, landmines and ambushes riddle the political landscape.
But the stars are in alignment if each player acts in its own self-interest to bring an end to the bloodshed and horrors this war has visited on the Afghan people.
If all this falls apart, however, next year will have a grim marker: some young Marine will step on a pressure plate in a tiny rural hamlet, or get ambushed in a rocky pass, and come home in an aluminum casket from a war that began before he or she was born.
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