You forget (or are perhaps just pig ignorant and simply do not know)that they have tried and been anihilated. Oh and we provided the weapons so that Saddam could do it.
The Kurds have been virtually murdered out of existence by both Turkey and Iraq and our State department said that it wasn't really a matter of U.S. interests. Just like the genocide in Armenia wasn't our concern and the attempted genocide by the KLA against Serbs.
Or the mass murders of Chinese citizens, Soviet citizens. When you hormonally imbalanced warmongers claim concern for certain regions of the world, it is always with a view to what is "winnable." If it is a large country like the Soviet Union who has killed over twenty million of its own citizens, it's not worth it.
But if it's a small country where you know we'll prevail, you're all for it. That is the definition of cowardice.