That's where you are wrong. Assad as dictator protected his own interests above that of Iran, just like his father did. Just like all the other despots being replaced in the middle east did. These dictators are being replaced by the muslim brotherhood that IS Iranian power.
Unlike the United States, both China and Russia have serious bloody muslim insurgencies going on and they are not hiding it by coming up with the religion of peace nonsense. Because they do not have religion of peace propaganda shoved at them, they would not assume the peaceful intent, nor support a pan islamic caliphate with one huge army under the control of the Ayatollahs.
Russia has a large naval base in Tartus, Syria. If Iran, through the muslim brotherhood, topples the Syrian government it will have that base at their disposal. Russia is showing every indication of keeping out of this conflict and letting the parties fight it out between them knowing that whoever wins, everyone but Iran loses. But, there will be fewer of either.
Unlike the United States, both China and Russia have serious bloody muslim insurgencies going on and they are not hiding it by coming up with the religion of peace nonsense. Because they do not have religion of peace propaganda shoved at them, they would not assume the peaceful intent, nor support a pan islamic caliphate with one huge army under the control of the Ayatollahs.
Russia has a large naval base in Tartus, Syria. If Iran, through the muslim brotherhood, topples the Syrian government it will have that base at their disposal. Russia is showing every indication of keeping out of this conflict and letting the parties fight it out between them knowing that whoever wins, everyone but Iran loses. But, there will be fewer of either.