Timeline of the war in Afghanistan

Published On: Jun 18 2013 11:36:52 AM CDT   Updated On: Sep 30 2014 07:13:23 AM CDT

A new security agreement keeping U.S. troops in Afghanistan past this year marks yet another chapter in the longest conflict in U.S. history.

Osama Bin Laden
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Stringer/Reuters

December 2001 -- Afghan militias track Osama bin Laden to the Tora Bora cave complex southeast of Kabul and begin a fierce two-week battle with al-Qaeda militants. Several hundred are killed, but bin Laden escapes.

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