Members of al-Qaida and allies of Pakistani tribal leader Baitullah Mehsud were responsible for last month's assassination of former Pakistani prime minister Benazir Bhutto, CIA director Michael V.

Founded in 2007 by Baitullah Mehsud -- hailing from the powerful Mehsud tribe of the South Waziristan tribal region --, the TTP already stands divided into four groups: the Swat group, Mehsud ...