The EU's credibility on enlargement depends on delivering tangible results.
In early June, European Union President António Costa traveled to the Western Balkans carrying a message that the region has heard before but rarely seen honored: that EU membership is a genuine destination, not a perpetual horizon. His visits to Sarajevo and neighboring capitals were designed to transform decades of ambiguous promises into a concrete reckoning, arriving at a moment when geopolitical pressures — Russia's war in Ukraine, Chinese infrastructure diplomacy, and the region's own institutional fragility — have made the question of enlargement far more consequential than a bureaucratic timeline. The EU's credibility, long eroded by broken commitments, now rests on whether this renewed engagement produces measurable results or becomes another chapter in a familiar story of deferred hope.
- Two decades of unfulfilled EU membership promises have left Western Balkan nations in a state of deep institutional fatigue, with skepticism hardening into a near-permanent posture toward Brussels.
- Russia's war in Ukraine and growing Chinese influence in the region have transformed enlargement from a procedural question into an urgent geopolitical contest the EU cannot afford to lose.
- Bosnia and Herzegovina faces a particularly acute test: its ethnically fragmented political structure and contested judiciary make the reforms demanded by Brussels both essential and extraordinarily difficult to deliver.
- Costa's direct, high-level engagement signals a deliberate break from the pattern of delegating enlargement to lower-tier officials, raising the political stakes for both sides.
- Bosnia and Herzegovina must now appoint a chief negotiator and complete judicial reforms — concrete, verifiable steps that will determine whether this moment of renewed commitment holds or dissolves.
António Costa arrived in the Western Balkans in early June with a message calibrated for a region that has learned to distrust Brussels: EU enlargement is real policy, not rhetorical comfort. His tour of Sarajevo and other regional capitals was a deliberate attempt to signal that the EU has moved past the ambiguous timelines and broken promises that have defined its relationship with the six candidate countries — Serbia, Montenegro, North Macedonia, Albania, Kosovo, and Bosnia and Herzegovina — for more than twenty years.
The backdrop to Costa's visit has grown considerably more urgent. Russia's war in Ukraine has sharpened the security logic of Balkans integration, while China and Russia have steadily deepened their influence in the region through infrastructure investment and political cultivation. For the EU, the enlargement question has become a geopolitical contest as much as an institutional one — and the cost of continued delay is no longer merely diplomatic.
For Bosnia and Herzegovina, the path forward is specific and demanding. The country must undertake judicial reforms and appoint a chief negotiator to lead accession talks — steps that would move it from the preliminary stages of candidacy into active negotiations. Neither is simple. Bosnia's deeply entrenched ethnic power-sharing arrangements have long made institutional reform contentious, and judicial accountability touches fault lines that remain raw nearly three decades after the war. Yet the EU cannot admit a member with a compromised judiciary without undermining the rule of law across the entire bloc.
What distinguished Costa's visit was its level. By traveling to the region himself rather than delegating to lower officials, he signaled personal investment in the outcome — a departure from the pattern that has allowed enlargement to drift. Whether that investment survives Bosnia's internal political divisions, and whether other candidates see genuine acceleration rather than another cycle of shifting goalposts, will determine whether this moment reshapes the region's trajectory or quietly joins the long history of false starts.
António Costa, the European Union's president, traveled to the Balkans in early June with a straightforward message: the bloc's long-promised expansion into the region is not rhetorical flourish but genuine policy. His visit to Bosnia and Herzegovina and subsequent tour of other regional capitals was designed to demonstrate that Brussels has moved beyond decades of ambiguous signals and broken timelines that have left candidate countries in a state of perpetual waiting.
The Western Balkans have occupied an uncertain position in European affairs for years. The region's six countries—Serbia, Montenegro, North Macedonia, Albania, Kosovo, and Bosnia and Herzegovina—have pursued EU membership for more than two decades, yet the path forward has remained murky, blocked by internal EU disagreements, geopolitical complications, and the candidates' own institutional shortcomings. Skepticism runs deep. Previous EU officials have made similar promises before, only to see enlargement stall in the face of French objections, Hungarian vetoes, or shifting political winds in Brussels.
Costa's message was calibrated to address this fatigue while also setting clear expectations. The EU is serious about bringing these countries into the fold, he signaled, but membership comes with conditions. For Bosnia and Herzegovina specifically, the requirements are concrete: the country must undertake judicial reforms and appoint a chief negotiator to lead accession talks. These are not vague aspirations but measurable steps that can be tracked and verified. The appointment of a chief negotiator is particularly significant—it signals that Bosnia and Herzegovina would move from the preliminary stages of candidacy into active negotiations, a shift that would represent real momentum after years of stagnation.
The timing of Costa's tour reflects broader EU calculations. The bloc faces pressure from multiple directions: Russia's war in Ukraine has made the security dimension of Balkans enlargement more urgent, as NATO and EU membership offer these countries protection and stability in a volatile region. Simultaneously, China and Russia have been cultivating influence in the Western Balkans through infrastructure investments and political engagement, creating a sense that the EU risks losing ground if it does not act decisively. The enlargement question is no longer purely about institutional readiness; it has become a geopolitical contest.
Bosnia and Herzegovina occupies a particularly delicate position. The country remains deeply divided along ethnic lines, with complex constitutional arrangements that distribute power among Bosniak, Croat, and Serb communities. This fragmentation has made institutional reform difficult and has given external actors—including Russia and Hungary—leverage to block or delay progress. Judicial reform is especially sensitive because it touches on questions of accountability and power distribution that remain contested nearly three decades after the war. Yet it is also essential: the EU cannot admit a member state with a compromised judiciary, as that would undermine the rule of law across the entire bloc.
Costa's visit was not merely symbolic. By traveling to the region and meeting directly with Bosnian leadership, he was signaling that the EU president himself is invested in the outcome. This is a departure from the pattern of lower-level officials handling enlargement discussions while political leaders focused on more immediate concerns. The message to the region was clear: we are paying attention, we are serious, and we expect you to move.
What remains to be seen is whether this commitment will survive the inevitable complications ahead. Bosnia and Herzegovina will need to navigate its internal political divisions to deliver on judicial reform. Other candidates will watch to see whether Costa's promises translate into actual progress or dissolve into the familiar pattern of delayed timelines and shifting goalposts. The EU's credibility on enlargement—already strained by years of unfulfilled promises—depends on delivering tangible results. If Costa's tour leads to genuine acceleration of accession timelines for countries that meet the criteria, it could reshape the region's trajectory. If it becomes another chapter in a long history of false starts, the consequences for European stability could be significant.
Citas Notables
The EU is serious about bringing these countries into the fold, but membership comes with conditions— António Costa, EU President
La Conversación del Hearth Otra perspectiva de la historia
Why does it matter that Costa went to the Balkans in person rather than sending a delegation?
Because it signals priority. When the president himself shows up, it says this is not a routine administrative matter—it's a strategic concern for the entire bloc. It also makes the promises harder to walk back later.
What's the actual barrier keeping Bosnia and Herzegovina out right now?
The judicial system is compromised. Courts can be pressured, judges can be influenced. The EU won't admit a country where the rule of law is fragile because it weakens the entire union. But fixing that means confronting power structures inside Bosnia that benefit from the current arrangement.
Why would Russia or China care about the Balkans joining the EU?
Because it removes them from the sphere of influence. Once you're in the EU and NATO, you're locked into Western institutions. Russia loses leverage. China loses access. The Balkans are the last frontier in Europe where that competition is still open.
Is Costa's promise credible given the history?
Partially. The EU has broken enlargement promises before. But the Ukraine war changed the calculus—suddenly stability in Eastern Europe became urgent rather than abstract. That's real pressure. Whether it's enough to overcome internal EU divisions is the question.
What happens if Bosnia meets the conditions but other EU members block it anyway?
Then the whole credibility structure collapses. You've told a country to jump through hoops, they do it, and you still say no. At that point, why would any candidate trust the EU again? And why would they resist Russian or Chinese overtures?
So this is really about whether the EU can deliver on its own promises?
Exactly. It's not primarily about Bosnia's readiness. It's about whether the EU can act coherently when it matters.