Eventually, this chain reaction may hit a glass ceiling due to Ukraine. Building off the fledgling trust that began with the fight against ISIS, a resolution to the conflict may finally be found. A multilateral forum of heads of state could call for a second referendum in Ukraine, this time under the auspices of the Organization for Security and Cooperation in Europe. While this possibility may seem far-fetched, it is one of the few opportunities available under international law, although it is likely that such a referendum will still result in Crimea becoming a part of Russia. Next, Mr. Putin could cease Russian support for militants in Eastern Ukraine, thereby earning the gratitude of the international community. In acknowledgment of this display of rule-abidance, the U.S., along with the other heads of state, would call for the reintegration of Russia into the international community and the commencement of a new stage of Russia-U.S. relations. Both states should see tremendous value in this move: Russia obtains recognition as a major player on the global stage, while the U.S. achieves its foreign policy goals in Eastern Europe.