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Berlin: Umweltbundesamt, 1994
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London: Chatham House, The Royal Institute of International Affairs, September 2023
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London: European Council on Foreign Relations (ECFR), June 2022
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2022
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Warsaw: Polish Economic Institute, December 2022
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Wiesbaden, 2023
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2022
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Rome, Italy: Istituto Affari Interanzionali (IAI), [September 2022]
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Baden-Baden: Nomos, 2023
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Baden-Baden: Nomos, 2019
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Stuttgart: ibidem Verlag, [2023]
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Brussels: CEPS, Centre for European Policy Studies, [30 May 2022]
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Wiesbaden: Springer VS, 2018