Biographical Profiles of Current MPP Graduate Students

Dylan Sullivan
IV - Economics and Public Policy
University of Missouri, 2004; Stanford University, 2008
Geological Sciences, B.A.; Civil & Environmental Engineering, M.S.
Bowling Green, Kentucky
For 11 years, Dylan has worked on clean energy and climate policy at the Natural Resources Defense Council, where he will return after Princeton. Most recently based in the environmental organization's San Francisco office, Dylan has been instrumental in passing ambitious renewable energy legislation in Nevada, served as the policy director of a clean energy ballot measure in Arizona, developed NRDC's energy efficiency-related comments for the U.S. EPA's Clean Power Plan, helped implement energy efficiency policies in Ohio, and has testified as an expert witness in 13 proceedings before state utility regulators. He holds a bachelor’s degree in environmental geology from the University of Missouri-Columbia and a master’s in civil and environmental engineering from Stanford University.
Emily Sullivan
I - International Relations
Stanford University, 2006
International Relations, B.A.
Washington, D.C.
Emily is a career State Department foreign service officer. She grew up overseas in the U.K. and France, which later inspired her to become a diplomat. She joined the U.S. State Department in 2009, and is drawn to challenging assignments like Port-au-Prince, Haiti, during the earthquake, Cairo after the Arab Spring, and overseeing our Yemen policy aimed at bringing an end to that country’s war. Most recently, she served in Pakistan and was responsible for the domestic politics and human rights portfolio. She earned an undergraduate degree from Stanford University in international relations. She is married and enjoys hiking, baking and traveling.
Nathaniel Tek
I - International Relations
Yale University, 2009
International Studies/Political Science, B.A.
Tenafly, New Jersey
Nathan is a foreign service officer at the U.S. Department of State. Nathan joined the U.S. Foreign Service in 2010 and has served at the U.S. Embassies in Libya and Qatar. He most recently served in the United Arab Emirates as a Department spokesperson for Arab media. Nathan has appeared on Al Jazeera Arabic, Al Arabiya, Sky News Arabia, BBC Arabic, France24 Arabic, CNN Arabic, and over 60 other Arab media outlets explaining the foreign policies of the United States government to Arab audiences. Nathan received his bachelor's degree in political science and international studies from Yale University in 2009. He studied Arabic at the American University in Cairo under the Center for Arabic Studies Abroad Fellowship Program.
Gelila Terrefe
II - International Development
University of Toronto, 1995; York University, 2001
Mechanical Engineering, BASc; Environmental Studies, MES
Toronto, Canada
Gelila was born in Addis Ababa, Ethiopia, and raised in Ethiopia, Kenya and Canada. Gelila earned a Master in Environmental Studies from York University, and Bachelor of Applied Science in mechanical engineering from the University of Toronto in Canada. She confirmed her passion for working at the nexus of poverty reduction and environment sustainability during the year she spent living in rural Ethiopia in 2000-01 among subsistence farming communities conducting ethnographic research for her graduate studies on resettlement as a food security strategy for drought-affected populations. For the past 18 years since, Gelila has been working at the United Nations based in New York City 2001-10 and 2013-16, and based in Addis Ababa 2011-12, and 2016-19, in policy advisory and project management roles in the areas of climate change and biodiversity, handling portfolios at global, regional and country levels. Among her notable professional contributions has been working in the U.N. Secretary-General’s executive office with responsibility for managing part of the process that enabled 195 countries to reach the Paris Agreement on climate change in 2015. After graduating, she hopes to continue the good fight against climate change, focusing on energy policy, globally and in the context of an economically integrated Africa. Gelila enjoys gardening, wine tasting, traveling to dramatic landscapes, spotting game in safari parks - especially the rare and enigmatic kind like the black lion, rhinos, the Ethiopian wolf - and live music, including hosting jam sessions.
Arturo Trejo
I - International Relations
University of California-Los Angeles, 2005
Astrophysics, B.S.
El Monte, California
Lieutenant Commander Art Trejo is a Naval officer who was born and raised in El Monte, California, and serves as a nuclear surface warfare officer. He most recently served as a reactor safety inspector for the Commander U.S. Pacific Fleet out of Pearl Harbor, Hawaii. He has previously served aboard USS Theodore Roosevelt (CVN 71), USS Stockdale (DDG 106), USS Nimitz (CVN 68), and USS Essex (LHD 2), and has deployed throughout the world including the Pacific and Indian Oceans and Arabian Gulf. Ashore, Art previously served under a military exchange program as Canada’s representative to NATO and senior staff officer for the Commander of Maritime Headquarters Atlantic in Nova Scotia, Canada. Art has been selected to command a Naval warship and after earning his MPP, he looks forward to his follow-on sea tours as an executive officer and commanding officer. Prior to becoming a Naval officer, Art served for three years as an enlisted Navy air traffic controller. Art is married with three children and loves cooking, movies and finding creative ways to get in into trouble.
Jeffrey Valdez
I - International Relations
University of the Philippines, 2006
Sociology, B.A.
Manila, Philippines
Born and raised in Manila, Jeff is joining the WWS community after a six-year stint at the Philippine Embassy in Moscow where he was responsible for bilateral economic relations. He has been a career foreign service officer since 2010 and has served in various capacities in the home office including, most recently, as assistant director for the Central Europe and Russia Divisions at the Office of European Affairs. He hopes to expand his understanding of asymmetrical bilateral relationships as well as data-driven policymaking in political and economic cooperation. Jeff loves basketball, boxing and table tennis. He also enjoys losing arguments with his wife who is a more accomplished diplomat.