He was wrong, and so was I.
They will never unite. Sunni / Shia will always be at war.
I don't call it a quagmire, I just call it like it is, a mess. To be honest, our best of intentions will not mean a thing in the long run.
You are right, this is like the Catholics going against the Protestants, except they kill who doesn't agree with them.
They are united against us, they want us dead. Period.
If we leave and let the Mullahs take control, it will be Iran times 1000. They will gather strength, numbers and technology and go after us till we no longer exist.
Why is this fact so difficult for most people to see?