3.5 – Regionalism and the EU
3.6 – Comparative theories
Recent tensions between Hungary, Ukraine and the European Union have highlighted both the challenges and resilience of regional cooperation. The dispute centred on the Druzhba oil pipeline, a key route supplying Russian oil to Central Europe. Damage to the pipeline in early 2026 disrupted supplies to Hungary and Slovakia. Hungary responded by vetoing a €90 billion EU loan intended to support Ukraine, linking its approval to the restoration of oil flows. This reflected the ability of individual states to prioritise national energy security within a regional organisation. However, the situation shifted significantly following the electoral defeat of the populist Hungarian Prime Minister Viktor Orban, which removed a major political obstacle to agreement.
Soon after, Ukraine completed repairs to the pipeline and resumed oil transit, addressing Hungary’s immediate concerns. With both political and economic barriers reduced, Hungary lifted its veto, allowing the EU to approve the loan and proceed with further support for Ukraine. The resolution of the dispute demonstrates that while regional organisations can be constrained by national interests, they retain the capacity to adapt and coordinate under pressure.