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

This is the War Against al-Qaeda the Next US President Will Inherit - Defense One

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

The Aftermath of 9/11: The Start of the Global War on Terrorism and the Lasting Impact on Afghanistan, by Ronit Kumar Singh

Al Qaeda to CNN: 'We Will Wage War Against the US on All Fronts', News

Where Wars Might Erupt in 2024

Zarqawi Foreshadowed Iraq Chaos

Timeline: The U.S. War in Afghanistan

Al Qaeda And The Islamic Terrorist Organization

The Wall Street Journal on LinkedIn: U.S. All but Stopped Spying on Hamas in Years After 9/11

United States country profile - BBC News

Osama got 9/11 terror attacks idea from EgyptAir crash

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