Peter Chase joined GMF’s Brussels office in September 2010 as a non-resident fellow and became a resident senior fellow in May 2016. His work focuses on the transatlantic economy with particular attention to trade and investment, digital and energy policies, and the EU’s economic relations with third countries.

Chase served as the U.S. Chamber of Commerce vice president for Europe from 2010-16; prior to this he was a U.S. diplomat with postings as minister-counselor for economic affairs in the U.S. Mission to the European Union, director of the State Department's office of EU affairs, chief of staff to the under secretary of economic affairs, and counselor and minister-counselor for economic affairs in the U.S. Embassy in London. 

Dr. Martin Quencez is a senior fellow and special adviser to the president. Over the past ten years, he has held several positions at GMF, including as managing director for GMF Strategic Foresight and director of the Paris office. He co-leads the Transatlantic Security Task Force and was an author of GMF’s annual flagship Transatlantic Trends report.

Dr. Quencez's work includes research on transatlantic security and defense cooperation, and US and French foreign policy, on which he regularly writes for international media. He is regularly invited by European ministries of defense to provide briefings and advisory support,  and frequently delivers presentations on geopolitics and transatlantic security to senior private-sector representatives.

Dr. Quencez was previously an associate researcher for the European Council on Foreign Relations, working in France for its European Powers program. He has taught transatlantic relations at the Euro-American campus of Sciences Po and worked for the Institute of Defense Studies and Analyses in New Delhi, focusing on French and Indian strategic thinking. 

Dr. Quencez studied international relations at Uppsala University and is a graduate of Sciences Po. He has a PhD in history from Sorbonne Nouvelle University. 

Markus Ziener is a professor of journalism and head of the master's degree program at Media University Berlin. He teaches political theory and economics, mass media, journalistic writing, and press history. He also writes regularly for The Straits Times and the Neue Zürcher Zeitung, and contributes to the German public broadcaster Deutschlandfunk/Deutschlandradio.

From 2006 to 2012, Ziener served as Washington bureau chief of Handelsblatt, Germany’s leading business daily. Prior to that, he worked as a field reporter, covering the wars in Afghanistan and Iraq. He was also Handelsblatt’s correspondent in Moscow (1994–1999) and in Eastern Europe (1990–1994). He served as foreign editor at the Financial Times Deutschland from 1999 to 2001.

Ziener studied in Erlangen-Nuremberg and earned a PhD in political science from Humboldt University of Berlin, focusing on financial crises and reforms in Poland. He also held a research fellowship at Duke University. In 2021–22, he was the Helmut Schmidt Fellow at GMF. He has been a Berlin-based visiting senior fellow at GMF since 2022, analyzing transatlantic relations, Russia, and Ukraine.