These Yanks only talk. Though they have cut aid to Pak, they should do more like what they are doing to Iran. After all, they have lost 6 Americans too in the carnage. And it's been 10 years and the perpetrators are yet to be brought to justice.
Clamp all round sanctions on them. All this nonsense that if they do, Pak will go further into China's arms is a load of crap. They are already sleeping with the Chinks and sold their souls to them so they can't go any deeper into their arms.
So why the hesitation? Is it because Pak is providing passage for American warlike stores etc? Or is it the billions of dollars of drug money the CIA is making from Afghanistan with the help of Pak's ISI, which is being used by the CIA for regime changes having fancy names like 'color revolutions' like funding the Syrian rebels etc as well as for funding their black projects?