They ARE controlling both sides. This is obvious. The illuminati doesn't want humanity to become peaceful and to unite the whole world. They want humans to fight amongst each-other for superficial and trivial reasons. Consider this.
The natives of America were fighting amongst themselves, never fully uniting. A couple tribes here and there wanted peace, but most were warlike and wanted control and power. The Europeans who arrived on the Americas encountered them, took advantage of their ignorance on trade, and drove them away from their land. How? Because the tribes were not united, they were even fighting amongst themselves during the colonization! This means that if a certain group does not work together, they will be wiped out by a different group who has worked together.
Now put that situation and try to adapt it to our current scene on Earth. People are fighting amongst themselves, countries and other countries are fighting with each-other for control, for power, for whatever they think they want. Even people in the same country are fighting amongst themselves! Now what happens if the Earth is visited by an extraterrestrial force and they want to colonize planet earth, or take our resources, or our women, or whatever? Conflict will occur. Do you think we will win this conflict? Did the natives win against their destroyers? No. We won't win, because we haven't even fucking united the god-damn globe yet. What hope do we have in winning against an Empire that has successfully united their planet and traversed the stars?
The point of this post is as long as you continue to have hatred for your fellow man, and continue to subdue and control people, humanity will never leave this planet, and we will be enslaved by a superior race that has succeeded where we have failed.