Leave them alone. We have already borrowed ourselves into bankruptcy with wars that are really none of our business. Its time to pay attention to our own problems instead of worrying about everyone else.
Syria is only a part of what is happening. Turkey is looking unstable at this point, as middle class Turks are beginning disenchanted with the ruling party , which has become more religious and far less secular than they like. The whole area has been a powderkeg for years, but now the fuse is burning fast. Iran made the decision to send in four thousand troops, which is greatly alarming the Israelis. China, Russia, and USA all have interests in the area. Your isolationist tendencies are naive in 2013. You tend to think in black and white friend. This isn't 1917. The major industrial powers are far more closely intertwined now. What affects one, affects all.