I know, I know, we are all STUNNED that the Pakistanis are exporting violence into Afghanistan. Stunned, I tell you!
...In his final congressional testimony before retiring next week, Navy Adm. Mike Mullen said success in Afghanistan is threatened by the Pakistani government's support for the Haqqani network of militants, which he called a "veritable arm" of Pakistan's intelligence agency.
Testifying alongside Mullen, Defense Secretary Leon Panetta also decried Pakistani support for the Haqqani network, and he said Pakistani authorities have been told that the U.S. will not tolerate a continuation of the group's cross-border attacks. Panetta said the message was delivered recently by new CIA Director David Petraeus in a meeting with the head of the Pakistani intelligence agency, the ISI...
And the ISI has always been behind the Taliban...
Here is a backgrounder on the ISI, Pakistan and Afghanistan at the Council on Foreign Relations.
More on Pakistan at the Long War Journal.