Columbia subject headings:
Bin Laden, Osama, 1957-2011.
National security--United States.
Qaida (Organization)
Terrorism--Government policy--United States.
Terrorism--Middle East.
Terrorism--United States--Prevention.
War on Terrorism, 2001-2009.
Harvard subject headings:
Bin Laden, Osama, 1957-2011.
National security--United States
Qaida (Organization)
Terrorism--Middle East
Terrorism--United States--Prevention
War on Terrorism, 2001-2009
Princeton subject headings:
Bin Laden, Osama, 1957-2011.
National security--United States.
Qaida (Organization)
Terrorism--Middle East.
Terrorism--United States--Prevention.
War on Terrorism, 2001-2009.