United Nations Peacekeeping and Conflict Management (UNPAC)

The Research Group United Nations Peace­keeping and Conflict Manage­ment (UNPAC) studies the actions and inaction of the United Nations in response to con­flict. It focuses on how the UN exercises in­fluence and power through various types of ac­tions, as well as how it res­ponds to challenges of insti­tutional credibility in the pro­cess.

The Research Group is funded by a private donation.

Photo of blue helmets and protective vests with UN lettering.

It aims to map the repertoire and evolution of UN res­ponses across time and across different pillars of the system, thereby identi­fying patterns and sources of agency. This is followed by detailed case studies of how certain res­ponses are developed, silenced, or mate­rialized. To tackle these ques­tions, the research group mobilizes diverse methods including Python-based web scraping, quali­tative data analysis, process tracing, interviews, and participant obser­vation.

UNPAC research aims to trans­cend mission-oriented research in peace­keeping by focusing on the spectrum and pro­cesses of deploying conflict responses. It seeks to contribute to scholar­ly and policy debates about UN reform, institu­tional effectiveness, organi­zational agency, and the changing nature of contem­porary conflicts.

Image: Marie Frechon via Flickr, CC BY-NC-ND 2.0.

Head of Research Group

Xinyu Yuan

Xinyu Yuan

Members

[Translate to Englisch:]

Myriel Julie Mathez

[Translate to Englisch:]

Frederik Schissler

PhD Projects

For a long time, the United Nations was widely regarded as the central actor in multi­lateral conflict manage­ment. Yet the number of UN-led peace opera­tions has been in steady decline. Contem­porary debates increasingly focus on regional organi­sations rather than the UN, or on ad hoc arrange­ments outside any established insti­tutional framework.

This disser­tation examines how the roles of four Inter­national Organisations engaged in multi­lateral peace operations — the United Nations, the African Union, the European Union, and the Organisation for Security and Co-­operation in Europe (OSCE) — have changed over time. Its theo­retical aim is to develop a theory of role change in International Organisations, identi­fying the conditions under which orga­nisations change their roles and the mecha­nisms through which such changes occur.

To address these questions, the project harmo­nises existing datasets on peace operations, en­abling systematic comparison of the man­dates and operational practices of all missions in which the four orga­nisations have been involved. Official documents, archival materials, Member State state­ments, and interviews are used to trace role-change pro­cesses and assess the condi­tions under which they take place.

[Translate to Englisch:]

Frederik Schissler

Doctoral Researcher

Publications

  • The Internationalization of Intrastate Conflict: Are Civil Wars Transforming?
    | 2026
    Pfeifer, Hanna; Schissler, Frederik; Schwab, Regine; and Wolff, Jonas (2026): The Internationalization of Intrastate Conflict: Are Civil Wars Transforming?, in: Bonacker, Thorsten; Daase, Christopher; Driedger, Jonas J.; Lam Phương, Nguyễn Phạm; Pfister, Jannik (eds), Routledge Handbook on Transformations of Political Violence, London: Routledge. DOI: 10.4324/9781003635024-4
  • Reform or Decline: The United Nations at a Crossroads
    | 2026
    Yuan, Xinyu; Hach, Sascha; Leonhard, Lucas Kori; Mathez, Myriel Julie; Schissler, Frederik; Speyer, Johanna; Bethke, Felix; Kroll, Stefan (2026): Reform or Decline: The United Nations at a Crossroads, PRIF Working Paper, 73, Frankfurt/M.
  • Zwischen Selbstbild und Wirklichkeit: Was Deutschlands UN-Niederlage wirklich offenbart
    | 2026
    Schissler, Frederik (2026): Zwischen Selbstbild und Wirklichkeit: Was Deutschlands UN-Niederlage wirklich offenbart, PRIF Blog.
    Publication
  • The internationalization of intrastate conflict
    | 2026
    Schissler, Frederik; Pfeifer, Hanna; Ruhe, Constantin; Schwab, Regine; Wolff, Jonas (2026): The internationalization of intrastate conflict. A network perspective on empirical evidence and theoretical explanations, Cooperation and Conflict, Online first. DOI: 10.1177/00108367251413148
  • The Internationalization of Armed Intrastate Conflict: A Systematic Assessment of the State of Research, Data, and Explanations
    | 2026
    Schissler, Frederik; Bethke, Felix; Pfeifer, Hanna; Ruhe, Constantin; Schwab, Regine; Wolff, Jonas (2026): The Internationalization of Armed Intrastate Conflict: A Systematic Assessment of the State of Research, Data, and Explanations, TraCe Working Paper, 7, Frankfurt/Main.
  • The Peacebuilders Playground: Peacebuilding Practices in Timor-Leste
    | 2025
    Berutti, Emilian ; Yuan, Xinyu (2025): The Peacebuilders Playground: Peacebuilding Practices in Timor-Leste, International Peacekeeping, 1–28. DOI: https://doi.org/10.1080/13533312.2025.2524403
  • Rethinking UN Peace and Security Engagements in a Changing World
    | 2025
    Hellmüller, Sara; Badache, Fanny; Bara, Corinne; Caplan, Richard; de Coning, Cedric; Danso, Ferdinand Kwaku; Donati, Marco; Duursma, Allard; Felicio, Tânia; Fraihat, Ibrahim; Fung, Courtney J; Herz, Monica; Hilding Norberg, Annika; Iji, Tetsuro; Peter, Mateja; Pinaud, Margaux; Reefke, Lisa; Salaymeh, Bilal; Stepanova, Ekaterina; Stoller, Maximilian; Sulaymanov, Shuhrat; Williams, Stephanie; Yuan, Xinyu (2025): Rethinking UN Peace and Security Engagements in a Changing World, International Affairs. DOI: https://doi.org/10.1093/ia/iiaf190
  • Chinese Conceptions of Peace – Historical foundations and implications for contemporary conflict agency
    | 2025
    Abb, Pascal; Yuan, Xinyu; (2025): Chinese Conceptions of Peace – Historical foundations and implications for contemporary conflict agency, FriEnt Report, Bonn: FriEnt – Working Group on Peace and Development.
    Publication

News

Lunch Talk by UNPAC Research Group on the UN80 Initiative
On October 27, the research group “United Nations Peacekeeping and Conflict Management” (UNPAC) presented its agenda for the next four years at PRIF.

UNPAC in the Media


Berlin Briefing – Myriel Marthez


RBB radio eins – Frederik Schissler (in German)


mephisto976 – Myriel Julie Mathez (ab Minute 41:50, in German)