Major al-Qaida leaders killed in US drone strikes over the last year:
February 9, 2012: Al-Qaida commander Badr Mansoor is killed in a drone strike in Miran Shah, the main town in Pakistan's North Waziristan tribal area. He was believed to be behind many of the suicide attacks
that killed scores of Pakistani civilians in recent years. Mansoor was from Pakistan's largest province, Punjab, and moved to North Waziristan in 2008, where he led a faction of more than 200 fighters.
September 30, 2011: Anwar al-Awlaki, a key member of al-Qaida in the Arabian Peninsula, is killed in a drone strike in the mountains of Yemen. The 40-year-old American-Yemeni cleric emerged as an enormously influential preacher among militants living in the West, with his English-language Internet sermons calling for jihad, or holy war, against the United States. He was in contact with the accused perpetrators of the 2009 shooting rampage at Fort Hood that killed 13 people, the 2010 car bomb attempt in New York's Times Square and the Christmas 2009 attempt to blow up an airliner heading to Detroit.
September 11, 2011: Al-Qaida's chief of operations in Pakistan, Abu Hafs al-Shahri, is killed in a drone strike in Pakistan's tribal region. Al-Shahri worked closely with the Pakistani Taliban to carry out attacks inside Pakistan.
August 22, 2011: Al-Qaida's second in command, Atiyah Abd al-Rahman, is killed in a drone strike in Machi Khel village in Pakistan's North Waziristan tribal area.
A Libyan national, al-Rahman never had the worldwide name recognition of Osama bin Laden or bin Laden's successor, Ayman al-Zawahiri, but al-Rahman was regarded as an instrumental figure in the terrorist organization, trusted by bin Laden to oversee al-Qaida's daily operations.
June 3, 2011: Al-Qaida's military operations chief in Pakistan, Ilyas Kashmiri, is believed to have been killed in a drone strike close to the town of Wana in Pakistan's South Waziristan tribal area. He was one of five most-wanted militant leaders in the country, accused of a string of bloody attacks in Pakistan and India as well as aiding plots in the West.