The Buffett Institute for Global Affairs at Northwestern University and the Fundación Acordemos decided to join forces to hold a symposium on April 3-4, 2025, in the city of Chicago in which they convened diplomats, negotiators, experts and academics, many with direct experience in peace negotiations over the past decades in cases such as Northern Ireland, Colombia, the Balkans, South Sudan, Russia-Ukraine, Israel-Palestine, Afghanistan and others, to identify lessons from these peace processes that may be useful for future negotiations and consistent in the face of the apparent crisis of multilateralism in peace matters.