How did it come to this in Syria?

One of the big questions about the Refugee Crisis and Syria is how has it got to this point.  Click the image below to a cartoon which sums it up very clearly, and reminds us that wars are never straight forward.

The cartoon itself is taken from Years of Living Dangerously they also have a Facebook page if you are interested (if you are under 13 and not old enough for Facebook ask an adult to show you)

Of course you may disagree or have more questions which you can use the comments section for if you wish.