Multilateralism and the United Nations Security Council

Madeleine O. Hosli is a Professor  of International Relations at Leiden University. Her main research interests are in international organization, international political economy and European integration. She is author of  The  Euro:  A  Concise  Introduction  to  European Monetary  Integration  (Lynne  Rienner,  2004) and The European Union and the United Nations in Global Governance (Bristol University Press, 2022). She is co-editor of The  Changing  Global  Order  (Springer  2020), The Future of Multilateralism: Global Cooperation and International Organizations (Rowman and Littlefield 2021) and of The Global, Regional and Local Politics of Institutional Responses to COVID-19: Implications for Women and Children (Palgrave MacMillan and Springer Nature 2022).  She  has  published  widely  in international peer-reviewed journals. Gabriela M. G. Bueno is a Program Assistant for the Advanced MSc International Relations and Diplomacy program at Leiden University and a Research Assistant for the Summer School 'The EU, the UN, and Global Governance.' She currently attends a master's program at Leiden University in International Relations: Global Order in Historical Perspective (MA). Gabriela has previously interned at the NGO United Way in the United States, where she got her bachelor's degree in international studies and a minor in anthropology at Flagler College. Gabriela has pursued her academic training also at Korea University in South Korea and Yamanashi Gakuin University in Japan studying both social sciences and international relations. She is the author of the chapter COVID-19 in the Americas: Challenges in the Institutionalisation of the Gender Equality Agenda (Palgrave Macmillan and Springer Nature 2022). She now focuses her research on historical memories as a political tool in multilateralism. Katyayni Champawat recently earned her Master’s degree in International Relations and Diplomacy from Leiden University, following her Bachelor’s degree in History from Lady Shri Ram College, Delhi University. During her undergraduate studies, she specialised in gendered Indian history and continued to deepen her engagement with gender theory, feminism, and post-colonial perspectives in her graduate studies. Her master’s thesis, titled "Feminist Foreign Policy for a Greener Tomorrow: Unveiling the Nexus between Canada’s Feminist International Assistance Policy and the Climate Crisis," integrated literature on ecofeminism, feminist foreign policy, poststructuralism, and ontological security. Passionate about research, writing, and editing, Katyayni aspires to further build a career in these fields. Sofia Pires Lopes holds an Advanced Master of Science in International Relations and Diplomacy from Leiden University, in the Netherlands, and a Bachelor in Political Science and International Relations from Nova University of Lisbon in Portugal. During her bachelor studies, she spent a semester abroad as part of the Erasmus+ programme at the University of Milan, in Italy. From September 2024 to February 2025, she was an intern at the Education and Events Team at T.M.C Asser Instituut in The Hague. She is also a UK and European Affairs Team member at ITSS Verona and a volunteer at the Platform for Undocumented Migrants (PICUM). Sofia is passionate about Foreign Policy Analysis, Policy Change, and Gender issues.

• Chapter 1: Introduction: Challenges to Multilateralism and the United Nations Security Council.- Part 1: Voting Behaviour and Co-Sponsorship in the UNSC.- Chapter 2: Coalitions, Peace Missions, and UNSC Decision-Making.- Chapter 3: Coalition Formation and Co-Sponsorship in the United Nations Security Council.- Chapter 4: Multilateral Cooperation and Great Power Rivalry in the UNSC.- Chapter 5: A Crystal Ball for Great Power Plays? Predicting Council Vetoes Through Machine Learning.- Part 2: Multilateralism: Regional Actors, United Nations Agencies, and Member States.- Chapter 6: The Small and Regional Powers Claim for Agency: A Strategic Usage of Non-Traditional Threats Through Arria Meetings.- Chapter 7: Small and Emerging Powers in UNSC Decision-Making.- Chapter 8: Multilateralism in Action: The European Union's Engagement in the United Nations Security Council.- Chapter 9: EU Member States in the Elected 10: Voting and Co-Sponsorship in the UNSC.- Chapter 10: NextGenerationEU and the UN Sustainable Development Goals.- Chapter 11: Conclusion:  The UNSC, Multilateralism and Patterns of Global Governance.