Douglas Hengel is a senior fellow contributing to German Marshall Fund’s work on global energy, climate, and resource challenges, with a particular focus on European energy security. He is also an adjunct faculty member at Johns Hopkins School of Advanced International Studies in Washington, DC. A former U.S. foreign service officer, Hengel served with the U.S. Department of State for more than 35 years. Among his postings, he was deputy chief of mission in Rome and in Bratislava, and also served at the U.S. embassies in the Czech Republic, Peru, and Venezuela. In Washington, Hengel worked as deputy assistant secretary of state for energy, sanctions and commodities from 2007 to 2010, where his responsibilities included formulating and advancing U.S. international energy security policy, including relations with the International Energy Agency (IEA) in Paris. Hengel chaired the Standing Committee on Long-Term Cooperation at the IEA and also worked extensively on Iran sanctions. Hengel has a bacehlor’s from Colgate University and a master’s in public policy from the Woodrow Wilson School at Princeton University.