As for any international body, the jokes that have been the ones we have seen in the last century, The League of Nations and The United Nations, more people killed, butchered and burned to a crisp under both sad excuses for peacekeepers. What is the point if millions are allowed to die without a "declaration of war"?
Peacekeeping belongs to the strongest. Always has. Always will. When the weak get together, their main objective always becomes to take down the strong and somehow to replace it. Has never worked. Never will.