Timeline of the war in Afghanistan

POSTED: 9:36 AM Jun 18 2013   UPDATED: 7:56 AM Aug 06 2014

The killing of a U.S. general marks a dark chapter in the war in Afghanistan. Here's a look back at the longest conflict in U.S. history.

Ground Zero 9-11
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Sept. 11, 2001 -- Al-Qaeda operatives hijack four commercial airliners, flying two into New York's World Trade Center and a third into the Pentagon. A fourth plane crashes in a field near the town of Shanksville, Pa., after passengers storm the cockpit. Nearly 3,000 people die in the attacks.

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