Al Qaeda's top leaders, their nationalities and status, according to U.S. officials:

— Usama bin Laden (Saudi-Yemeni): unknown

— Ayman al-Zawahri, second-in-command (Egyptian): unknown

— Mohammed Atef, military commander (Egyptian): killed by airstrike

Terrorist and military operational chiefs:

— Abu Zubaydah (Palestinian-Saudi): captured

— Abd al-Rahim al-Nashiri, Persian Gulf operations chief (Saudi): unknown

— Abu Musab Zarqawi (Jordanian): fled to Iran from Afghanistan

— Abu Zubair al-Haili: unknown

— Tawfiq Attash Khallad (Yemeni): unknown

— Zaid Khayr: unknown

— Mohammad Salah (Egyptian): killed by airstrike

— Tariq Anwar al-Sayyid Ahmad (Egyptian): killed by airstrike

Bin Laden's security chiefs:

— Saif al-Adil (Egyptian): unknown

— Amin al-Haq (Afghan): unknown

Religious-legal scholarship:

— Abu Hafs the Mauritanian (Mauritanian): killed

Afghan training camp commanders:

— Abu Mohammad al-Masri, aka Abdullah Ahmed Abdullah (Egyptian): unknown

— Ibn Al-Shaykh al-Libi (Libyan): captured

— Abd al-Hadi al-Iraqi: captured

Al Qaeda finances and logistics:

— Shaikh Saiid, aka Mustafa Ahmed al-Hisawi (Saudi): unknown

— Abu Jafar al-Jaziri: killed

— Abu Salah al-Yemeni: killed

— Abdul Rahim Riyadh: captured

— Ahmad Said al-Kadr (Egyptian-Canadian): unknown

— Hamza al-Qatari: killed

Public relations:

— Sulaiman Abu Ghaith (Kuwaiti): unknown

Weapons of mass destruction research:

— Midhat Mursi (Egyptian): unknown

Aides/other lieutenants:

— Abu Basir al-Yemeni (Yemeni): unknown

— Abd al-Aziz al-Jamal: unknown

— Bilal bin Marwan (Saudi): unknown

— Saqar al-Jadawi (Yemeni-Saudi): unknown

— Mohammad Omar Abdel-Rahman (Egyptian): unknown

— Ahmad Omar Abdel-Rahman (Egyptian): captured