I just read the Research blog, The Situation in Syria Growing Grim on the MVCC library home page. I was curious about the use of chemical weapons in Syria. I had a vague idea on how and when they had been used in the past but I wanted a better understanding of what chemical weapons are and why most nations are against their use.
Here are three sites that will help you understand the seriousness of this type of warfare.
How will U.S. respond to Syria?