Timeline: Unrest in Syria

Published On: Dec 24 2013 03:19:21 AM CST   Updated On: Sep 23 2014 09:32:18 AM CDT

The U.S. and several Arab nations have begun airstrikes in Syria -- the latest chapter in a bloody civil war. Learn about the major events in the country's tumultuous uprising.

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April 2013 -- Britain and France inform the United Nations that there is credible evidence that Syria has used chemical weapons against rebel forces. Defense Secretary Chuck Hagel says the U.S. has evidence of sarin gas being used on a small scale.

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