Chapter 9 concludes the book by highlighting implications that are relevant for academic researchers as well as policymakers. The book’s findings suggest at least three areas for future research. First, a more comprehensive analysis of the sources of perceptions of bias in conflict settings would productively inform scholarship and practice. Second, future work should investigate the conditions under which communal peace aggregates up to the national level. Third, scholars should examine whether governments and their partners succeed in leveraging gains from localized peace enforcement into states with robust institutions. The book also has two important implications for the practice of peacekeeping. First, given the importance of perceptions, policymakers must ensure that peacekeepers remain impartial. International actors perceived by local populations as relatively impartial are much more effective at promoting intergroup cooperation and facilitating the peaceful resolution of communal disputes. Second, given that communal peace in the analysis relies so heavily on the presence of UN peacekeepers, the international community must consider how to design peaceful transitions out of PKOs.

This chapter applies localized peace enforcement theory to a subnational analysis of patterns of dispute escalation in Mali. In order to investigate whether the previous chapters’ experimental findings generalize to real-world operations, the chapter presents the results of two analyses of UN peacekeeping efforts to prevent the onset of communal violence in the central Malian region of Mopti. The first study leverages a geographic regression discontinuity design to compare dispute escalation on either side of the Burkina Faso–Mali border. The border splits similar areas into those “treated” with UN peacekeeping patrols (on the Mali side) and “control” areas without peacekeeping (on the Burkina Faso side). The findings indicate that peacekeeping reduces the likelihood of communal violence. The second study delves deeper into the data with an analysis of UN peacekeepers from different countries deployed to the same regions of Mali and uncovers further evidence in line with the predictions of the theory. Rather than comparing UN peacekeeping in countries with against those without a peacekeeping operation, the study compares UN peacekeepers from different contributing countries – Togo and Senegal – deployed to the same area.

This introductory chapter explains the book’s motivating puzzles and outlines its theoretical and empirical strategies. The book focuses on local-level peacekeeping operations designed explicitly to prevent communal violence. It argues that deploying UN peacekeepers to fragile settings fundamentally changes the structural incentives facing communities in conflict. Scholars typically pinpoint the UN’s success at the negotiating table: peacekeepers help armed group leaders make lasting agreements that stabilize conflict settings from the top down. Yet such negotiations seem unable to prevent communal violence in places as diverse as South Sudan in East Africa, Mali in West Africa, and the Democratic Republic of the Congo in Central Africa. This book shifts the analytical lens to the local level to investigate the conditions under which peacekeepers successfully build peace from the bottom up. The book’s main argument is that UN peacekeepers succeed when local populations perceive them to be relatively impartial enforcers who are unconnected to the country of deployment, the conflict, and the parties to the dispute. Impartial peacekeepers convince all parties that they will punish those who escalate communal disputes regardless of their identity, which increases communities’ willingness to cooperate without the fear of violence.

Utilizing the theoretical framework of transnational legal orders (TLOs), this chapter treats two master questions in global governance: What are the limits to the power of the UN Security Council? Can rule-of-law (ROL) norms constrain UNSC powers? First, we outline a research design with emphasis on its documentary and unique internal empirical sources. Second, we sketch an interpretive narrative of UNSC engagement from the early 1990s to the present with ROL in three areas of UNSC action: peacekeeping, sanctions, and force. Third, we offer a new conceptual approach by proposing that ROL in the UNSC manifests itself in three dimensions: discourse, procedure (or rules), and structures. These dimensions come into play both internally, within the UNSC itself, and externally, in ROL institution-building in and between states, as well as in post-conflict zones, with a rather gray area between (e.g., when the UN peacekeeping missions are themselves subject to ROL oversight for the behavior of their personnel). Fourth, we examine the emergence of micro-TLOs under construction within the UNSC itself. We conclude with reflections on the potential for empowering elected members of the UNSC and weaker states in the UN to press ROL norms on the UNSC as a springboard for ROL global governance via the UNSC.

This chapter examines local-level peacekeeping operations in a cross-national context. The analysis draws on a dataset of nearly 400,000 georeferenced troop deployments in sub-Saharan Africa from 1999 to 2019. Consistent with the theory’s predictions, it demonstrates that increases in the number of peacekeeping troops deployed to local communities are strongly positively associated with decreases in the onset of communal violence. Since cross-national data of this sort cannot directly measure local perceptions of peacekeepers cross-nationally, the study tallies the number of peacekeepers from former colonial powers and neighboring countries deployed to each area as a proxy for perceptions of bias. The patterns further vary in ways that support the logic of localized peace enforcement theory. Specifically, the evidence shows that there is no relationship between the deployment of these two types of peacekeepers and levels of communal violence. The analyses presented in the chapter also detect a strong negative association between all other types of peacekeepers, likely to be perceived as impartial, and the onset of communal violence.

The concluding chapter wraps up the various arguments and pieces of evidence presented in this book in favor of our peace formula. Overall, the first take-home message to be highlighted is the need for smart idealism – as neither the cold-hearted egotist nor the naïve idealist will be able to curb conflict. Secondly, it is again stressed which concrete policies are key to making a difference, creating a synthesis of the various points of the previous chapters. In particular, we emphasize the key role of a democratic voice, security warranties, promoting productive work, fostering trust and reconciliation, accelerating a well-managed green energy transition and stepping up international coordination across a variety of issues. The final point is that since we are all affected by conflict, we should all be part of the solution. It turns out that several studies have found that pressure from the public opinion matters, both in the implementation of policies and in preventing atrocities. There is a job to be done, so let us work together to make a change.

As shown in this chapter, state capacity and security warranties are further key factors in the peace formula. In particular, besides certain institutional features, the overall strength of the state is a major determinant of political stability, as illustrated by examples and recent research on Iraq, Somalia, Niger and the origins of the Mafia in southern Italy. Drawing on cutting-edge studies, it is argued that being feared (by extremist groups) may be more important than being loved (by the population at large). In order to win the hearts and minds of the population, it is essential that first public safety is guaranteed and that basic services are delivered efficiently. This is easier said than done. It is shown that when foreign military aid aims at capacity building, it often backfires. In contrast, UN peacekeeping troops have been demonstrated to play a key role. We end this chapter by emphasizing the several domestic factors that can help the building of lasting state capacity, with a special emphasis on well-designed welfare programs such as Franklin D. Roosevelt’s New Deal.

This chapter starts off by explaining that we are in the midst of a critical historical juncture with a record number of wars and conflicts around the world, calling for urgent action. Next, we discuss in depth three common but disastrous misconceptions, namely that shady deals leaving autocrats in power can bring peace, that “buying” peace through simple cash transfers works, and that charm offensives and communication efforts suffice to do the job. Drawing on a number of examples, the book highlights the pitfalls of these common misconceptions before turning to success stories. Illustrated by examples of the successful postwar reconstruction of Germany and Japan, the fall of apartheid in South Africa and democratization of Uruguay, Chile and Peru, the chapter then formulates the key components of what is called the peace formula – a set of key policies that constitute crucial ingredients for a successful and lasting pacification process. Finally, it is stressed that to counter distorted incentives for peace we need smart idealism – pairing good intentions with evidence-based policy knowledge.

This chapter explains the legal and political features of the United Nations. It begins with a short introduction to the UN Charter, which shows the framework of international law that defines, limits and empowers the organisation. It then puts these into a more practical setting, which emphasises how the United Nations is at the same time an actor, a forum and a resource for governments.

As the three primary cases do not show every configuration of independent variables that should lead to failed concealing, this chapter begins with two more circumscribed explorations of failed concealing in Tanzania and Honduras. It then explores the other strategies and examines their long-term effects. Although concealing is intrinsically risky since a ruler cannot know their own state’s legibility and presence of a strong enough asymmetrically interdependent relationship until these are tested in action, these other strategies may carry even bigger risks. As such, we should expect to see rulers, especially those with reasonable patronage-based capacity but little autonomy from outsiders’ interests and interference in their domestic affairs to try to conceal unsavoury domestic practices. It is therefore important to remain mindful of the effects successful concealing can have on global norms of human rights and good governance.

International Relations theory has dealt extensively with norms and agency in normative environments, including the impact of norms on state behaviour; their diffusion and localisation; and their evolution, contestation, and change. Yet, to date the issue of norm conflict has remained theoretically and empirically understudied in International Relations. We still have little understanding of the judgements that governments or institutions make regarding compliance when the directives inherent in the norms to which they have committed appear to be mutually exclusive. The objective of this chapter is to conceptualise norm conflict as a challenge to decision-making in normative international environments and to outline a theoretical framework for studying and understanding norm conflict, including – most importantly – the ways in which states and international institutions seek to resolve it. In so doing, we draw from International Law and Sociology, two disciplines that have extensively dealt with norm conflict.

The United Nations was designed to be the central world institution for peace and security, with the Security Council at its core. This chapter looks at the law and history of the UN’s role in international peace and security, along with the secondary role played by the General Assembly. The Security Council is at the intersection of law, politics, and enforcement in world politics. The chapter looks at the formal powers given to the Security Council in the UN Charter and then examines how the practical life of the Council since 1945 has been both more than and less than what the Charter says. Case studies of mass killings in Sudan, Rwanda, and Syria show the limits of Council power under the influence of the US, Russia, and other powerful governments.

This chapter presents an analysis on Kofi Annan’s mediation efforts in Syria and focuses on his agency when overseeing the UN’s entry into the Syrian conflict. The chapter is divided in three main sections. The first offers a concise background of the main mediation initiatives pursued during Annan’s time as mediator. Of which there were five main mediation policies and responses – the mediator’s entry into the conflict, the Six-Point Plan, the nationwide ceasefire and deployment of UNSMIS, the Geneva I process, and the mediator’s resignation. Using a first-level analysis, the second section continues to elucidate the agency of the mediator in shaping each of these mediation outcomes. Finally, the third section explores the dynamics behind the mediator’s decision-making. Specifically, it examines how the mediator’s key strategic perceptions influenced his decision-making. Drawing on the contingency model, four categories of perceptions are studied – the identity of the mediator, the context of mediation, the parties, and the process of mediation. Building off this analysis, the chapter proposes general links between each category of perceptions and specific mediation behaviors.

With a focus on the African Union, this chapter examines the Security Council’s practices when interacting with regional organisations in collaborative peace operations. The Security Council plays a critical role in two ways: (i) it identifies security threats and the required responses, and it authorises UN missions to deal with them; and (ii) it determines the role, if any, to be played by regional organisations and authorises the action they can take to address threats to peace in their regions. Africa is both the site of conflicts that have necessitated UN peace operations or the Council’s authorisation of enforcement actions, as in Libya in 2011, and home to that regional organisation which has engaged the most with the United Nations in maintaining international peace and security. The overarching argument of this chapter is that – notwithstanding changes in the post-Cold-War international political landscape and the rise of other voices from the periphery – the status of the Security Council as custodian of the collective security system remains undiminished. Its centrality and primacy have not been challenged or usurped by the African Union or other regional organisations.

The principle of distinction in International Humanitarian Law sets up two entities, the civilian and the combatant, and organises the relationship between them. This socio-legal chapter draws on original research from South Sudan to explore how this principle is operationalised in humanitarian–peacekeeper interactions. Humanitarian actors routinely invoke ‘distinction’ as they navigate operational dilemmas with respect to the use of military assets, and in their relationship with the UN Mission in South Sudan more generally. Two ‘ideal types’ of humanitarian actor emerge here. The first type takes a strict approach to distinction, thinking long term and eschewing military asset use that undermines distinction. The second type interprets distinction flexibly and balances it with other goals such as reaching people in need; this exposes a hidden conflict between the principles of distinction and humanity. Through these everyday interactions – which sometimes involve drawing lines within the civilian category – humanitarian actors produce distinction in law, in practice, and in perception.

Chapter 5 examines the powers of the UN Security Council in the maintenance of international peace and security and how the notion of collective security has developed since the Charter was adopted. It also looks at the role of peacekeeping and regional organizations within the overall context of collective security.

This chapter examines post–Cold War debates in the United States over the US Army’s participation in peacekeeping operations. Peacekeeping missions may have been a central concern of the US Army in the 1990s, but they also exposed deeper fissures within the Army and broader American society about the organisation’s proper role and the sort of attributes that American soldiers would need in the twenty-first century. Army leaders and personnel deployed on peacekeeping operations struggled to articulate which martial values best applied to peacekeeping. Political commentators tended to be much less ambivalent about peacekeeping, with some neoconservative observers enthusiastic about using such operations to practice ‘soft’ skills that would be useful in later wars, while most conservatives displayed a deep antipathy for such interventions, arguing that they corroded valuable warfighting skills and were symptomatic of an Army that had lost its way. For the few liberal commentators engaged in debates over Army policy, peacekeeping operations represented an opportunity to showcase American values and even to promote a deeper connection between the US military and broader American society.