Ad hoc crisis response and international organisations (ADHOCISM)

2021 - 2025 (Ongoing)
ADHOCISM asks what is the impact of ad hoc crisis responses on international organisations?

International organisations (IOs) are created with the aim of solving collective action problems when a crisis arises. Yet, member states have repeatedly established ad hoc crisis responses in situations where IOs might be expected to play a central role.

ADHOCISM asks what is the impact of ad hoc crisis responses on international organisations? In this way, ADHOCISM wants to contribute to filling this knowledge gap through a systematic study of ad hoc crisis responses in two policy domains: security and health. With this paired comparison, ADHOCISM wants to tap into a broader empirical governance phenomenon. Ad hoc crisis responses are here understood as loose groups of actors that agree to solve a particular crisis at a given time and location outside of an existing international organisation in the same policy domain. Ad hoc crisis reponses can, in the short-term, lead to more rapid and effective crisis responses among like-minded states, but if international organisations are no longer seen as the principal instruments to confront global challenges, the risk is also that the relevance of these international organisations will diminish, and similar trends may unfold in other domains.

To advance knowledge on ad hoc crisis responses, ADHOCISM will establish a dataset on ad hoc crisis responses in global health and security. In health, the case study will be on the relationship between the World Health Organization (WHO - IO) and the Vaccine Alliance (Gavi), the Coalition for Epidemic Preparedness Innovations (CEPI) and the joint COVAX project. In the security domain our case studies will be the AU African Standby Force and EU Battlegroups (IOs) and the Multinational Joint Task Force fighting Boko Haram (MNJTF); and the Joint Force of the Group of Five Sahel (JF-G5S) and Barkhane, primarily in Mali.

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Funding program

The project is funded by the Research Council of Norway (FRIHUMSAM)


Ad hoc coalitions are increasingly charged to tackle international crises

February 28, 2023

How does this impact on international organisations?



Governance Through Regime Complexity: What Role for the EU in the African Security Regime Complex?

  • Malte Brosig
  • Friedrich Plank
  • Yf Reykers
The international response to armed conflict in Africa often takes the form of a regime complex characterized by institutional proliferation, overlap, ...
Publication : Academic article
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Ad hoc coalitions in global governance: short-notice, task- and time-specific cooperation

Ad hoc coalitions (AHCs) are an indispensable but scantly conceptualized part of global governance. In recent years, several typologies and classifications ...

Project Manager

John Karlsrud

Research Professor, Head of the Research group on peace, conflict and development


Peace operations  Security policy  International organizations  The EU  United Nations  Africa  AU

Yf Reykers, Maastricht University (co-PI)

Malte Brosig, University of Witwatersrand

Stephanie Hofmann, European University Institute