Bosnia’s Dayton System Collapses from Within as Transatlantic Rift Paralyzes the OHR

This structural paralysis matters because the Dayton system was never designed to operate entirely on domestic political consent.

The 1995 peace agreement created Bosnia and Herzegovina as a sovereign state composed of two entities, the Federation of Bosnia and Herzegovina and Republika Srpska, alongside the Brčko District. The constitution provides no right for either entity to secede. Yet the system also depended on an unusually strong international role, centred on the Office of the High Representative and backed by the so-called Bonn Powers introduced in 1997.

Those powers allowed the High Representative to impose binding decisions, overturn legislation judged incompatible with the constitutional order and remove officials considered a threat to peace or the Dayton framework.

That external authority is now much harder to use.

The vacancy that changed the balance

Christian Schmidt’s departure in 2026 has become more than a personnel change. It exposed a strategic disagreement between Washington and European capitals over what the international presence in Bosnia is supposed to achieve.

Schmidt announced his decision to leave after nearly five years as High Representative, asking the Peace Implementation Council to begin the process of finding a successor. The OHR itself has acknowledged that key reforms remain unfinished and that its work is still essential.

The dispute over his replacement has since hardened. The Trump administration backed Italian diplomat Antonio Zanardi Landi and advocated narrowing the OHR's role, particularly towards economic questions. Most EU governments and Britain supported retaining the office's broader civilian and regulatory mandate and backed French diplomat René Troccaz. With the Peace Implementation Council unable to produce consensus, Schmidt's deputy, American diplomat Louis Crishock, took over on an interim basis.

The disagreement is important because the OHR's authority has always depended on more than the legal language of Dayton. It requires political backing from the states that created and sustained the post-war settlement.

Without that unity, the powers remain formally available but become less credible as a deterrent.

For Banja Luka, the distinction is decisive. Dodik has used the dispute over the OHR to reinforce his long-standing argument that the institution is illegitimate. The departure of Schmidt has given that argument a new political opening.

The timing could hardly be more sensitive.

From electoral rhetoric to institutional attrition

Dodik, formally removed from the presidency of Republika Srpska after being convicted for refusing to implement decisions of the High Representative, has retained substantial influence as leader of the SNSD. His political message in 2026 has moved beyond the conventional language of defending entity autonomy.

At a commemoration in Donja Gradina in April and during September campaign appearances, he described Republika Srpska as a transitional formation on the way towards a permanent union with Serbia and threatened to reverse what he called imposed state-level reforms if his candidates prevailed.

The significance lies less in the novelty of separatist rhetoric than in the weakening constraints around it.

In earlier stages of the post-war settlement, threats to dismantle state institutions could trigger intervention by an international authority with both the mandate and political support to act. The current environment is different. Washington and Brussels disagree over the role of that authority, US pressure has eased, and Banja Luka has learned that institutional defiance can be turned into a durable political strategy.

The US decision in October 2025 to lift sanctions on Dodik after Republika Srpska's National Assembly repealed several disputed laws further altered that calculation. The move was criticised by members of the US House of Representatives over alleged lobbying influence. It also enabled Dodik to return to Washington in February 2026, where he again argued that Dayton was no longer sustainable.

The result is a shift from performative separatism towards something more institutional.

The immediate objective need not be a formal declaration of independence. A gradual transfer of authority away from state institutions can achieve much of the same political effect while keeping the threshold for international intervention ambiguous.

Sarajevo and Zagreb are pushing the other way

The danger is not confined to Republika Srpska.

In September, Bosnia's Defence Minister Zukan Helez called for the abolition of Republika Srpska, describing it in terms that Banja Luka interpreted as an existential threat. Republika Srpska's leadership responded by presenting Sarajevo as the source of a possible armed confrontation and used the controversy to mobilise its own electorate.

That confrontation is politically useful precisely because it feeds the logic of mutual insecurity.

Croatia has introduced another pressure point. In July, its parliament adopted a resolution on the political equality of Croats in Bosnia and Herzegovina, reviving demands associated with Croat parties for changes to the electoral system and greater territorial autonomy, including discussion of a possible third entity.

The effect is cumulative. Republika Srpska is challenging the central state from one direction; Bosniak political forces are increasingly responding with demands that question the permanence of the entity structure; Croatian actors are pressing for a reconfiguration of their own position.

Dayton was built around managing precisely these competing interests.

If each side begins to treat the settlement not as a framework for compromise but as a structure to be renegotiated unilaterally, the constitutional architecture becomes progressively harder to operate even without a formal attempt to redraw the map.

Serbia provides the bridge, Russia the wider leverage

Belgrade's position remains deliberately ambiguous. Serbia does not openly endorse the legal separation of Republika Srpska, but it provides Banja Luka with political, media and material support.

That distinction gives Serbia room to present itself as a stabilising regional actor while maintaining close links with the leadership of Republika Srpska.

For Russia, the arrangement offers influence without the costs of direct intervention. Republika Srpska can obstruct Bosnia's institutional consolidation and complicate its Euro-Atlantic trajectory while Moscow remains at arm's length.

The strategic value is therefore not necessarily the creation of an independent Serb state. Persistent instability can be sufficient.

A Bosnia trapped in constitutional disputes is less capable of integrating with European structures and more dependent on regional intermediaries. It also forces European governments to spend political capital managing crises that require little direct Russian involvement.

That is a relatively inexpensive form of geopolitical leverage.

Europe still has force, but less political coherence

EUFOR's Operation Althea remains the principal international military presence in Bosnia and Herzegovina. Its mandate continues to provide an important security backstop, and EU institutions continue to regard the mission as central to maintaining peace and stability.

But military presence cannot substitute for political authority.

The security assessment contained in the current crisis is therefore unusually important: the risk of a direct armed conflict remains limited, while the danger of local provocations and ethnically driven street violence is rising.

That is a narrower problem than renewed war, but it is also harder to solve through military deterrence alone.

EUFOR can help prevent a deterioration in the physical security environment. It cannot by itself restore authority to weakened state institutions, settle the dispute over the OHR or persuade Bosnia's political elites to accept the Dayton settlement as a common framework.

The European Union consequently faces a problem that is partly military but fundamentally political. Brussels is being left with responsibility for a security architecture over which its members do not entirely agree, while Washington is pursuing a more transactional approach to the region.

The gap between those positions is becoming an instrument in the hands of Bosnia's political elites.

The next phase may be constitutional, not military

The most consequential question is therefore not whether Bosnia will suddenly descend into war. The more immediate issue is whether the country can continue functioning while its constitutional order is progressively hollowed out.

The Dayton settlement survived for three decades because domestic actors faced external limits on how far they could challenge it. Those limits are now less certain.

That does not make the collapse of Bosnia inevitable. The continued presence of EUFOR, the formal constitutional structure, European political engagement, and the international legal framework remain significant constraints. But their effectiveness depends increasingly on political coordination rather than automatic enforcement.

The unresolved struggle over the next High Representative is consequently about more than one diplomatic appointment. It is a test of whether the transatlantic powers still share an understanding of what the Dayton system is for.

If they do not, Bosnia's politicians have an increasingly powerful incentive to test the boundaries.