The question that springs to mind for me is: What are we trying to do, specifically? We want to bring about peace, sure, but how? Are we going to negotiate an international treaty? Or are we planning to secure peace by killing all who oppose us?
It reminds me a bit of X-men, with the warlocks being Magneto's guys. Humans are all like "Mastermold! What are you doing? We programmed you to protect humanity from mages!", and Mastermold is all like, "That is illogical. Mages are humans. Therefore, humans must be protected from themselves. All human leaders shall be replaced with artificial duplicates under my control".
I'd like to play a warlock, convinced of the benevolent applications of Chaos magic. The 'demons' that we're accused of working with? They're an advanced transdimensional species whose magic can make life better for all of humanity, but given our past actions are no longer willing to invest in developing the human world as long as it remains in a state of constant war and autocratic governance. The warlocks currently in power are instead talking to rogue extremist factions within this 'demon' world, selling them the rights to our natural resources in exchange for Chaos magic to be used only as weapons. But they don't give us the technological secrets behind Chaos magic - they only sell us magical effects, the finished product, so we have to keep going back to them and buying more. How do I stop our warlock rulers from continuing this disastrous course for humanity? To weaken their command structure too greatly would invite an uprising by humans and mages that would lead to senseless slaughter and several giant leaps backward in progress as Chaos magic is banned by an antiquated military elite fighting to escape obsolescence. If they succeed in overthrowing the warlocks, it may take another 1000 years to recover all of the lost knowledge, and the mages will once again suffer under Apartheid.