Washington Post – Afghan-Pakistani Hostility Impedes U.S. Troops

Greg Jaffe writes that while senior U.S. and Pakistani officials have stepped up efforts in recent months to tame the chaotic border area, used by the Taliban as a base from which to fire rockets at U.S. positions in Afghanistan and smuggle fighters and weapons. But high-level talks have not led to cooperation on the ground, where U.S. troops are struggling to overcome decades of enmity between Afghanistan and Pakistan.