its all about the oil, iran has the oil and pipelines, iraq has the some oil but mostly pipelines, syria doesnt have much oil and is dependent on iran for oil. take iran n syria out you have vast oil supplies,oil dependent country and with iraq you have open country to do whatever you want with since gov is in control. i have a thread about this already.

Thread: Over 100 nations calling for syrian leader to step down, recognize rebel group. ITS ABOUT THE OIL!!! REBEL GROUP BEING USED BY BIG OIL!!