Wurst has been based at the United Nations since 1987. He has worked as a reporter for the Inter Press Service, The InterDependent, UN Wire, Global Security Newswire, and as well as a contributor to the World Policy Journal, the Bulletin of Atomic Scientists, Arms Control Today, A Global Agenda, and In These Times. He covered peacekeeping missions in Namibia and Mozambique and UN conferences in Geneva, Vienna, and Monterrey (Mexico). In addition, he has worked as a consultant/analyst on arms control issues for the Global Security Institute, the Council on Economic Priorities, the Lawyers’ Committee on Nuclear Policy, the Interchurch Peace Council (IKV, the Netherlands), and the Arias Foundation for Peace and Progress (Costa Rica).