This very informative article does a nice job of connecting the dots.

WASHINGTON - Despite evidence implicating current Pakistani army chief General Ashfaq Pervez Kiani in a major military assistance program for Taliban insurgents in Afghanistan over the past few years, senior officials of the Barack Obama administration persuaded the US Congress to extend military assistance to Pakistan for five years without any assurance that the Pakistani assistance to the Taliban had ended.

Follow the easy flow chart:

Your Tax Dollars--->
U.S. Provides 2 Billion Dollars Military Aid to Pakistan---->
Pakistan Army's internal security unit (ISI) trains Taliban forces in two special camps near Quetta.

The marvelous Pakistani internal security force, incidentally, is the same organization that is "disappearing" students and independence activists in Balochistan.

Hey, we're getting a twofer for our money!