The U.S. has declared that the Syrian government used chemical weapons against rebels, and will step up aid to Syrian rebels.
Russia backs the Syrian government.
An array of powers and armed groups are choosing up sides in the conflict.
The G8 meet next week and will be looking at the situation.
It's a nasty scenario to say the least.
As a track fan, I wonder about the status of the World Championships in Moscow. It's not impossible that politics could intervene.