The Hungary–Oschadbank Seizure: Why Ukraine’s Case May Be Stronger Than It First Appears

Hungarian authorities detained seven Ukrainians on 5 March 2026, said that criminal proceedings had been opened on suspicion of money laundering, and later returned the two armoured vehicles while continuing to hold about US$82 million in cash and gold

Introduction

Hungary’s detention of Oschadbank personnel and seizure of cash and gold in transit should not be dismissed as a routine money-laundering episode. On the public record, Hungarian authorities detained seven Ukrainians on 5 March 2026, said that criminal proceedings had been opened on suspicion of money laundering, and later returned the two armoured vehicles while continuing to hold about US$82 million in cash and gold. Hungary’s parliament then authorised the tax authority to retain the assets for sixty days while it investigated their origin, destination, and any implications for national security. Oschadbank, meanwhile, is not an ordinary private carrier. The National Bank of Ukraine lists it as a state-owned and systemically important bank.

Can Domestic Criminal-Law Rescue Hungary?

Hungary’s criminal-law justification must also be tested more carefully than in the following publication. Hungary’s reliance on criminal seizure was not accidental. It reflects the structure of its domestic law. Under Act LIII of 2017, AML is an instrument whose objective is transaction suspension. Where facts indicate money laundering and immediate action is required, the service provider must suspend the transaction and report it to the Financial Intelligence Unit, which then has a short statutory window to assess the report. That mechanism is built for urgent interruption, not for prolonged control of assets in a complex cross-border case. The next step lies in the Code of Criminal Procedure. Section 308 of Act XC of 2017 makes seizure the ordinary coercive measure where an asset may serve as evidence or may later be subject to confiscation or forfeiture; it also permits urgent enforcement before formal authorisation where delay would jeopardise the object of the measure. The end-point of that chain is supplied by Section 74 of the Criminal Code, which subjects proceeds of crime, replacement assets, and gains enriching another person or an economic operator to confiscation. Hungarian legal thinking has long pushed in that direction. MONEYVAL records Police Directive No. 45/2010 and Prosecutorial Circular 2/2015 as measures designed to strengthen tracing and securing crime-related assets, especially in economic cases. The Curia’s Uniformity Decision No. 1/2022 BPJE likewise treats seizure as a self-contained criminal-law institution. Read together, those materials show the logic of Hungary’s choice: stop the movement under AML law, preserve the assets under criminal procedure, and hold them within a framework capable of ending in confiscation if the laundering case can be proved. That domestic logic, however, does not answer the international question.

International anti-money-laundering and organised-crime instruments do contemplate freezing, seizure, and confiscation of proceeds of crime and related property. But that proposition only takes Hungary so far. Such regimes authorise genuine criminal enforcement. They do not authorise speculative immobilisation of foreign public assets without a demonstrable criminal nexus, nor do they displace any immunity that may otherwise attach. The controlling point is therefore evidential and juridical at once. Transnational confiscation measures must remain closely tethered to genuine criminal proceeds and must be accompanied by safeguards against arbitrariness and disproportionality. If Hungary cannot establish a credible connection between the shipment and an identifiable laundering offence, the legal picture changes materially. The case then ceases to look like ordinary criminal enforcement and begins to resemble unsupported coercive retention of foreign public assets. Good faith remains the baseline

Are the Seized Funds Protected by State Immunity?

That matters because the incident appears, at least for now, as a pre-judgment criminal restraint over assets said by Ukraine to belong to a state-owned bank, not as an ordinary post-judgment enforcement measure. Oschadbank’s own account is that the convoy was on a regular, licensed cash-in-transit operation from Austria to Ukraine; that such land transfers have taken place weekly since the full-scale invasion; that the funds were being moved under an agreement with Raiffeisen Bank Austria; and that the cash and gold were intended for circulation and supply of the Ukrainian cash market. The bank also said that consular representatives were not allowed to join the detained employees. (oschadbank.ua) Hungary, by contrast, as referenced above, says only that it is investigating suspected money laundering. That is enough to identify the legal issue, but not enough to resolve it.  The immunity question must therefore be approached in the right order. The first issue is not the test of function alone in this case. It is whether these assets can plausibly be treated as State property for immunity purposes at all. Article 2(1)(b)(iii) of the U.N. Convention on Jurisdictional Immunities of States and Their Property which treats agencies or instrumentalities as part of the “State” only to the extent that they are entitled to perform, and are actually performing, acts in the exercise of sovereign authority. As observed in, Article 2(1)(a) and (b)”, in The United Nations Convention on Jurisdictional Immunities of States and Their Property: A Commentary (Oxford University Press, 2013), a definition of “State” is a “necessary, albeit not sufficient, criterion” for the availability of State immunity. Ergo, the court must first ask whether the entity or property falls within the “State” for immunity purposes, and only then move to the further inquiry into use or function. Therefore, state ownership by itself is not conclusive. That is the first point the analysis makes clear.

The second issue is function. Even though the Convention is not yet in force as a treaty, its structure still offers a disciplined way to frame the problem. This claim finds merit in the ICJ’s judgment in Jurisdictional Immunities of the State (Germany v. Italy) which is widely read as treating core parts of that framework as reflective of customary international law.  Article 19(c) protects State property from post-judgment measures of constraint unless it is established that the property is specifically in use, or intended for use, for other than government non-commercial purposes. Article 21 then gives special protection to certain categories of State property, including central-bank or other monetary-authority property. But it does not imply that all other public financial assets are stripped of protection. The category of protected public property is wider than that.

The present case is not a straightforward Article 19 case, because Hungary says it is acting through criminal process rather than civil execution. The Convention’s architecture nevertheless remains useful. The real question is whether these assets were serving a governmental non-commercial function when they were restrained. On Oschadbank’s version of events, Ukraine has a serious argument on that point. If the shipment was genuinely intended to maintain wartime cash circulation and market supply inside Ukraine, then the transport looks less like ordinary banking commerce and more like public monetary administration under emergency conditions. Wartime circumstances does not create immunity by circumstances. But it does show purpose. And purpose is what gives the argument its force. The stronger the evidence that the assets were moving as part of Ukraine’s wartime financial continuity machinery, the harder it becomes to characterise them as ordinary commercial assets simply because a bank was carrying them. That does not mean Ukraine automatically wins the immunity point. Oschadbank is not the National Bank of Ukraine. Article 21(c) therefore cannot simply be invoked as though these were, by definition, central-bank reserves. But the opposite conclusion does not follow either. Article 21 singles out monetary-authority property for especial protection; it does not say that all other public financial assets are stripped of protection. Ukraine’s real case is narrower and better: not that every asset of a state-owned bank is immune, but that these particular assets may have been performing a sovereign public function when they were restrained.

Strasbourg as an Alternative Route

As for remedies, Strasbourg is the more plausible alternative route, but only as an alternative route. The European Court of Human Rights has accepted, as per its own Practical Guide on Admissibility Criteria, that a state-owned company operating with legal and financial independence may still qualify as a “non-governmental organisation” for the purpose of Article 34. That makes a Convention claim at least arguable if Oschadbank can show sufficient institutional separation from the Ukrainian State. Under Article 1 of Protocol No. 1, seizure and confiscation of assets are generally analysed as controls on the use of property, and the Court asks whether the interference was lawful, foreseeable, proportionate, and accompanied by adequate safeguards. The Court’s own materials, in its entirety, stresses that a State cannot keep property under seizure indefinitely without meaningful legal recourse. This discussions resembles the court’s jurisprudence as well. In Islamic Republic of Iran Shipping Lines v. Turkey, the Court focused not on formal ownership but on whether the company in question exercised governmental powers or enjoyed institutional autonomy, holding that a wholly state‑owned entity could still qualify as a “non‑governmental organisation” where it operated on a commercial footing and possessed distinct legal personality.

That property analysis does not, however, exhaust the Strasbourg dimension of the dispute. The case is not only about assets. It is also about the treatment of the personnel detained alongside them. In that respect, the consular point should be dealt with separately, and not left floating in the background. Article 36 of the Vienna Convention on Consular Relations requires that consular officers be free to communicate with and have access to nationals of the sending State, and that the competent authorities inform the consular post without delay if the detainee so requests. Oschadbank has publicly alleged that consular representatives were not allowed to join the detainees. If that allegation is accurate, it gives rise to a distinct treaty issue whether or not Hungary was otherwise entitled to investigate the assets. It is therefore a legal flank of its own, and not merely colour at the edges of the seizure dispute. At the same time, the same factual matrix may also reinforce the proportionality analysis under the Convention, because prolonged detention, denial of access, and restraint of property together present a more serious interference than a routine financial investigation.

On the merits, Hungary would likely rely on the familiar proposition that crime-control measures can justify interference with property. That is true as far as it goes. Cases such as Balsamo v. San Marino show that freezing or confiscation tied to serious criminality can be Convention-compliant where the measure is lawful and proportionate. But proportionality is precisely where Hungary may face difficulty.

A prolonged freeze of wartime assets belonging to a foreign public bank, combined with disputed factual foundations and allegations of abusive detention of staff, presents a materially different picture from an ordinary domestic proceeds-of-crime case. Nor is the case confined to property. If the detention account is accurate, the employees may have claims under Article 5 ECHR concerning liberty and security, and potentially under Article 3 ECHR if the allegations of physical abuse are borne out. Ukraine, for its part, may also proceed by way of an inter-State application under Article 33 ECHR. That route would allow it to present the dispute as a composite wrong: property interference, unlawful detention, denial of consular access, and possibly degrading treatment. The Court’s jurisprudence on confiscation and seizure under Article 1 of Protocol No. 1 highlights several recurring benchmarks: a sufficiently clear legal basis, a genuine connection between the impugned property and the alleged criminality, and procedural safeguards that allow the owner to contest both the factual predicates and the proportionality of the measure. In the aforesaid case, the Court underscored that even in the context of serious financial and organised crime, blanket or open‑ended freezes that effectively extinguish economic value, without timely and meaningful judicial scrutiny, are difficult to reconcile with the “fair balance” requirement between the general interest and the protection of individual property rights. Those criteria provide a ready‑made analytical template for assessing Hungary’s measures.

Even so, Strasbourg does not sit entirely comfortably with the immunity argument. The two routes depend on different characterisations of the bank. For immunity, Ukraine will wish to emphasise public function and sovereign purpose. For Strasbourg, Oschadbank would need to emphasise distinct legal personality and sufficient autonomy to sue as a Convention applicant. Those positions are not impossible to reconcile, but they are not identical. The prudent course is therefore to present Strasbourg as a fallback case. If a court declines to treat the assets as immune State property, Oschadbank may still argue that the restraint violated its Convention property rights because the measure lacked a sufficient legal and evidential foundation, or because it became disproportionate in duration and effect.

Conclusion

The stronger reading of this affair is not that Ukraine lacks a viable international case. It is that Hungary may have exposed itself on several fronts at once. First, the immunity argument is more substantial than a purely formal reading would suggest, because the better question is not simply who carried the assets, but what function they were serving when restrained. Secondly, domestic criminal-law machinery, even if validly engaged under Hungarian law, does not by itself answer the international objection that foreign public assets may have been immobilised without a sufficiently demonstrated criminal nexus. Thirdly, the detention of the personnel and the alleged denial of consular access widen the dispute considerably and make it much harder to treat the matter as a routine financial investigation. Strasbourg, for its part, offers a plausible fallback route, though only if Oschadbank can establish sufficient autonomy to sue as a Convention applicant. On the facts presently in the public domain, Ukraine and Oschadbank do not have a perfect case. They do, however, appear to have an arguable one on more than one front.