Transatlantic Relations

Niklas Ebert is a program manager with GMF’s Transatlantic Security program. Based in Berlin, he works mainly on issues of deterrence and resilience as well as German security and defense policy.

Prior to joining GMF, Ebert worked as a research assistant at the International Institute for Strategic Studies’ Defence and Military Analysis Programme in Berlin. Previously, he worked for the German Federal Foreign Office focusing on nuclear disarmament and non-proliferation. He gained additional experience at PricewaterhouseCoopers and the German Council on Foreign Relations.

Ebert received a bachelor’s degree in liberal arts and sciences from Maastricht University and holds a master’s degree in war and conflict studies from the University of Potsdam.

Sarah Jones is the Washington, DC-based managing director of GMF’s Leadership Programs. In that role, she leads five flagship leadership initiatives, manages a $2.4 million annual budget, supervises international teams across four countries, and oversees an alumni network encompassing 4,000 people in Europe and North America. Her work focuses on leadership development, organizational effectiveness, and democratic resilience, with an emphasis on aligning institutional values with strategy, talent systems, and measurable impact. She works closely with senior leadership and board committees on strategic planning and long-term organizational sustainability.

Jones is a global leadership development and organizational strategy executive with over 12 years of experience building and leading leadership initiatives across nonprofit, public, academic, and private-sector institutions. She previously served as GMF’s inaugural senior leader responsible for organizational inclusion and culture, and established the organization’s first institution-wide strategy focused on inclusive leadership capability and workforce sustainability. In addition to her executive leadership, she is an adjunct professor at American University’s School of Public Affairs, where she teaches leadership development in public and international affairs.

Jones holds a master’s degree in international education, is professionally proficient in Spanish, and brings extensive global experience from working in more than 30 countries.

Julia Tréhu is a Paris-based program manager and fellow with GMF Technology. Her focus is on US and European digital and technology policy, including technology-related trade and investment policy, platform regulation, data governance, and artificial intelligence. Tréhu holds master’s degrees in international political economy from the London School of Economics and in international security from Sciences Po Paris, and a bachelor’s degree in history from Princeton University.

James Bindenagel is a U.S. Ambassador (ret.), whose 30-year Foreign Service career included assignments in West, East, and united Germany. He is currently a Senior Professor at the Center for Advanced Security, Strategy, and Integration Studies at Bonn University.

Sophie Arts is a Washington, DC-based fellow with GMF’s Transatlantic Security team. She leads the team’s research on Nordic and Arctic security and geopolitics, covering North American homeland defense against conventional and hybrid threats, and cooperation with allies and partners. She also focuses on Russian and Chinese activities in the Arctic region. 

Arts serves as co-chair on the task force for global peace and security for the Think7 (T7), the official G7 group that brings together the world’s leading think tanks and research centers. Her writing and commentary are featured regularly in international media. 

In 2017, Arts joined GMF's security and defense policy team, focusing on transatlantic security within and outside NATO. Her prior research covered the alliance’s partnerships and flexible formats, the impact of emerging technologies on NATO defense and deterrence, the dynamics of escalation within the cyber domain, and strategic stability in a multipolar world.

Arts previously worked at the Atlantic Council, GMF’s Brussels office, Spiegel Online International, and Kantar Media. Originally from Germany, she holds a master’s degree from Humboldt University in Berlin and a bachelor’s degree from the University of Freiburg. She completed coursework at Connecticut College and the University of Virginia, where she also worked as a research assistant in the media studies department and in the university’s Center for Politics, supporting Larry J. Sabato's work on "The Kennedy Half-Century".