Ambassador (retired) Carey Cavanaugh is professor of diplomacy and conflict resolution at the University of Kentucky and chairman of International Alert, a London-based independent peacebuilding organization. His foreign service career focused on conflict resolution, arms control, and humanitarian issues. Ambassador Cavanaugh discusses NATO solidarity on Ukraine, the unexpected consequences of launching a war, the interdependence of the countries of the world and the importance of the United Nations agencies ranging from the UN Security Council, the General Assembly, the World Food Program, UN Refugee Agency, UNICEF, IAEA at Chernobyl and others in working to extend humanitarian assistance, reduce conflict and promote peace and security.