The  likelihood is minuscule, but what if Hamid Karzai were indeed to follow up his threat of military operations on Pakistani territory with some sort of action? The Afghan president has argued over the years - particularly since 2006, when a surge in violence attributed to the Taliban made it progressively harder for the western intervention in Afghanistan to be portrayed as the "good war", in contrast with Iraq - that the insurgents in his country rely on sustenance and supplies from militant redoubts and training facilities across the border