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Katerina Geisler is a senior program coordinator for the GMF Cities team. She focuses on projects that link city and international affairs, and that connect cities on both sides of the Atlantic so that they can better tackle shared local challenges.

Geisler has experience working in democracy and international cooperation. She joined GMF from the Securities and Exchange Commission’s Office of International Affairs. Before that, she worked as a policy analyst for a US congressional campaign.

Geisler holds a bachelor’s degree in international relations and political science from Florida International University and an executive course certificate in subnational diplomacy from The George Washington University.

Hannah Abdullah is a senior program officer and fellow in the GMF Cities program. She leads GMF Cities’ work on climate justice and sustainability, which supports transatlantic cooperation for achieving an inclusive green transition that starts locally. Abdullah regularly speaks and publishes on the role of cities in global and European climate governance, as well as in the transition toward sustainable development. She is based in GMF’s Brussels office.

Christiane Heimann is a visiting fellow at GMF and a research fellow at the Research Institute for Vocational Education of the Forschungsinstitut Betriebliche Bildung. In 2016–17, she was a visiting scholar at the University of California, Berkeley. Her work has been published in international academic journals, book series, and for the European Commission, and political foundations. She completed her doctoral studies in 2016 at the Bamberg Graduate School of Social Sciences, where she was the recipient of a Konrad-Adenauer-Foundation scholarship. In the course of her doctoral studies, she arranged research stays at University College London and the Universitat Pompeu Fabra in Barcelona. Prior to her graduate studies, Heimann held the position of lecturer at the Technische Universität Kaiserslautern and visiting lecturer at the Universidad Autónoma de Madrid. She received a bachelor’s degree in European studies and social sciences at Otto-Friedrich-Universität Bamberg and the Universidad de Salamanca.