Pakistanis place flowers by portraits of soldiers killed in a militant siege on the army's Rawalpindi headquarters to pay tribute in Lahore on October 14, 2009. The feared Tehreek-e-Taliban Pakistan (TTP) group has vowed to avenge their leader Baitullah Mehsud's death in a US missile strike in the lawless northwest tribal region of South Waziristan on August 5. The Islamist extremist group has already claimed a weekend raid on Pakistan's army headquarters, when gunmen took 42 hostages in a brazen siege ending with nine militants, 11 soldiers and three hostages killed. Getty Images logo Getty Images 1 month ago

Pakistanis place flowers by portraits of soldiers killed in a militant siege on the army's Rawalpindi headquarters to pay tribute in Lahore on October 14, 2009. The feared Tehreek-e-Taliban Pakistan (TTP) group has vowed to avenge their leader Baitullah Mehsud's death in a US missile strike in the lawless northwest tribal region of South Waziristan on August 5. The Islamist extremist group has already claimed a weekend raid on Pakistan's army headquarters, when gunmen took 42 hostages in a brazen siege ending with nine militants, 11 soldiers and three hostages killed.