I don't know wether it is true, or false, anyway Russia is really involved in Syrian conflict.
US pursue a goal, this goal is to control all mesopotamia, as said, and described how to do, how to deal with, in the famous book "the great chessboard".http://www.amazon.com/The-Grand-Chessboard-Geostrategic-Imperatives/dp/0465027261
The controll of the Mesopotamia, implied to counteract any russian-chinese influence, by destroying all arabian-islamic countries that are not under the israelis diktat. This is what's happened to Libya, Mali, Chad, Yemen, Iraq, few decades ago Lebanon, and in next Syria, Egypt, Iran. The goal is the control of the Near-east, and all Africa -as Algeria, will be undoubtly, the next target-.
However, in order to do that, they will have to fight, and overthrow, the legitime syrian governement. In order to dive up Syria into an unfinite civil war.
But the first part of this plan failed. It failed because it is opposed by President Vladimir Putin who involve Russian' army fighting with Syrian army. Indeed, an israeli submarin Dolphin class would be destroyed, few turkish, and israelis aircrafts downed. This was the case because of 17.000 russians are in Syria Many of them are specialists, and undoubtly, participated to the war, in every area. Signing the the return of Russia, in the world's chessboard.
If this information is true about US missiles would have downed by Russia, it will act a definitive US defeat, and olgarchy to govern the world.
The first signs indicated that this information would be true, because US seems to give up its plan to attack Syria.
In the next few days, and weeks we will see the truth.