Admiral Mullen and General Petraeus have grown impatient with Pakistan's and the ISI's support for the Haqqani network, a Taliban ally that works as a proxy for Pakistan's military and intelligence services. Recent disclosure of Pakistan's military and civilian leadership's effort at a Kabul meeting to have the Afghanistan government distance itself from the U.S. have added to concerns. The appointment of Gen. Petraeus to lead the CIA, including direction of the drone campaign, is expected to continue the tension in the relationship.