Timeline of the war in Afghanistan

Published On: Jun 18 2013 11:36:52 AM CDT   Updated On: Aug 06 2014 09:56:46 AM CDT

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.

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May 2012 -- At a summit in Lisbon, NATO endorses a plan to withdraw foreign combat troops and hand over security to Afghan forces by the end of 2014.

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