Al-Qaeda Has Been at War With the United States for Twenty Years - The Atlantic

The Failure in Afghanistan and the Fallout for Global Security - Centre for International Governance Innovation

Israel-Hamas War highlights: Israel fires missile at Gaza house of Hamas chief today

20 years on, an inconclusive war on terror - The Hindu

America Played Into Al-Qaeda's Hands - The Atlantic

Buy American Traitor: The rise and fall of Al-Qaeda's U.S.-Born Leader Adam Gadahn Book Online at Low Prices in India

20 years after 9/11, has the Taliban severed its ties with Al-Qaeda?

Twenty Years of “Endless Wars”: The Legacy of 9/11

On This Day: September 11 terror attacks shake New York, the US - The Jerusalem Post

Al-Qaeda Has Been at War With the United States for Twenty Years - The Atlantic

CIDOB - 20 years on from 9/11: War impossible, peace improbable

A Special Relationship, by Andrew Cockburn

The Terror Years: From al-Qaeda to the Islamic State by Lawrence Wright

Abu Musab al-Zarqawi - Wikipedia

The Man Behind Bin Laden