1 Introduction

In the case of Mothers of Srebrenica v. the State of the Netherlands, the Court of Appeal of The Hague decided on 27 June 2017 that the State of the Netherlands committed wrongful acts by (a) facilitating, in July 1995, the separation of male Bosnian Muslim refugees by the Bosnian Serbs in a mini safe area created close to Srebrenica, as well as (b) evacuating the male refugees from the compound of the Dutch UN battalion (Dutchbat).Footnote 1 After being handed over to the Bosnian Serb militia led by Ratko Mladić, most of these refugees were killed. According to the Court, Dutchbat was aware of the serious risk of the refugees being tortured, treated inhumanely or degradingly, or executed, and nevertheless went on to evacuate them from the mini safe area. However, as the Court considered that these refugees would have been killed anyway by the Bosnian Serbs, even if Dutchbat had refrained from the wrongful separation, it dismissed the next-of-kin’s claims for damages. In addition, holding that it was uncertain whether the men on the compound would have survived had they been kept there, the Court ruled that the next-of-kin would be entitled to only 30% of the damage they had suffered. On 20 September 2017, the State filed a cassation appeal against the Court of Appeal’s decision, as a result of which the Dutch Supreme Court will now hear the case.

The Court of Appeal’s judgment in Mothers of Srebrenica contributes to a better understanding of the question of attribution of conduct in complex UN peace operations, and of the circumstances under which wrongful acts may be committed. It builds on the seminal (and related) Dutch cases of Mustafić and Nuhanović v. the State of Netherlands (2008–2013), in which the courts held the Dutch State liable for the evacuation from the same Dutchbat compound of a Bosnian electrician and interpreter working for Dutchbat.Footnote 2 However, the judgment differs considerably, both in terms of reasoning and actual outcome, from the first instance judgment rendered by the District Court of The Hague in 2014, commented previously in this Review.Footnote 3 Even if both courts held the State (partly) liable, they did so on other grounds.Footnote 4 This note explains the main differences between the first instance and appeal judgments in Mothers of Srebrenica. It focuses on the four main issues of (international) legal relevance addressed by the courts: (1) the attribution of conduct to the State in UN peacekeeping operations; (2) the extraterritorial application of human rights treaties; (3) the State obligation to prevent genocide; (4) the State’s liability for damages.Footnote 5 These issues are likely to be salient for any peace operation deployed in an environment where gross human rights violations, including genocide, are committed by one or more parties.

2 Attribution of Conduct in UN Peacekeeping Operations

At the first instance, the District Court determined that the question of attribution of conduct in UN peacekeeping operations must be answered according to public international law, and—like the Dutch Supreme Court’s decisions in Mustafić and Nuhanović—considered the ‘effective control’ standard laid down in Article 7 of the Draft Articles on the Responsibility of International Organizations for Internationally Wrongful Acts (DARIO 2011) to be the appropriate yardstick to attribute conduct to the State and/or the UN. On that basis, it went on to attribute a number of acts which occurred in the vicinity of Srebrenica to the Dutch State.Footnote 6 According to the District Court, in UN peacekeeping operations, attribution to the State would be a function of the State acting ultra vires, i.e., if the national military force, after having transferred command and control to the UN, goes on ‘to act beyond the authority given it by the UN or on its own initiative acts against the instructions of the UN’.Footnote 7 Because Dutchbat’s actions were held to be in conflict with the orders given by the UN—Dutch government instructions were considered to interfere with the management of the operational implementation of the mandate by Dutchbat—those actions would automatically be attributed to the State. This reasoning however appeared to misconstrue the notion of ultra vires in the law of responsibility. Notably, pursuant to Article 8 DARIO, also conduct which exceeds the authority of an organ or agent of an international organization or contravenes instructions (ultra vires conduct), is considered an act of the organization under international law ‘if the organ or agent acts in an official capacity and within the overall functions of that organization’. Such conduct does not suddenly become an act of the State whose troops acted as organs or agents of the organization.

The Court of Appeal has corrected this mistake. Also relying on the DARIO, it has limited attribution to the State to the situation of troops acting truly outside the official capacity and overall functions of the UN, rather than derogating from the UN’s instructions. In addition, the Court espoused a narrow interpretation of the terms ‘acts in an official capacity’ and ‘overall functions of the UN’ of Article 8 DARIO. Applying the presumption that the UN normally exercises overall control over UN peacekeepers, it ruled that operational combat actions belong to the powers and tasks of the UN peacekeepers. Accordingly, in the Court’s opinion, the Netherlands had no control whatsoever over estimations of the reality of the dangers, over reinforcements, or over exchanging fire with the Bosnian Serbs. Control over these decisions instead rested with the UN.

In terms of attribution, this made a major difference. The District Court, relying in particular on specific ‘instructions’ given by the Netherlands which arguably interfered with the UN mandate, determined that the State had effective control over a host of acts that took place after the fall of Srebrenica on 10 July 1995, e.g., Dutchbat surrendering weapons to the Serbs, providing humanitarian assistance to the refugees, and preparing their evacuation. The Court of Appeal, in contrast, espousing the narrow interpretation of Article 8 DARIO, attributed far fewer acts to the State. It pointed out that the so-called ‘instructions’ given by the State were only non-binding communications, which could not lead to a finding of effective control of the State over specific actions. The Court only found ‘effective control’ by the State over a number of actions taken from the evening of 11 July 1995 onwards, when a transitional period started after the decision of the State and the UN to evacuate Dutchbat and the Bosnian Muslim population which had sought refuge in the mini safe area created outside the compound of Dutchbat. It was only during this period that the State had effective control over Dutchbat’s acts concerning humanitarian assistance to, and the evacuation of refugees in the mini safe area.

3 The Extraterritorial Application of Human Rights Treaties

The range of acts attributable to the State pursuant to the District Court’s model may be much wider than the range of acts attributable to the State under the Court of Appeal’s model. Ultimately, however, the District Court found the State liable (responsible in international law terms) in respect of only one act, namely the act of carrying off men from the compound who were then killed by the Bosnian Serbs. The Court of Appeal, for its part, while seemingly approaching attribution narrowly, established that the State committed wrongful acts in two situations, not only when carrying off the men from the compound but also when separating the men queuing for the buses that would take them away from the mini safe area, i.e., outside the compound. The District Court did not establish liability for any acts committed outside the compound, even if such acts had been attributed to the State.

The discrepancy between the large number of acts which the District Court attributed to the State and the fact that the State was liable for only one act, can be explained by the workings of the concept of ‘jurisdiction’ in human rights law. Relying on the ECtHR’s judgment in Al-Skeini (2011), which required the exercise of ‘public powers’ by the State in the form of ‘executive or judicial functions’ for an individual to be within the jurisdiction of the State for purposes of the extraterritorial application of the European Convention on Human Rights (ECHR),Footnote 8 the District Court stated that ‘by means of Dutchbat the State was only able to supervise observance of the human rights anchored in the ECHR and ICCPR vis-à-vis those persons who as of the fall of Srebrenica were in the compound’, and that ‘the State was not able to do this for the populace of the safe area prior to the fall of Srebrenica and even less after that vis-à-vis the refugees in the mini safe area that lay beyond the compound or beyond the mini safe area’.Footnote 9 Accordingly, the State only had human rights obligations vis-à-vis refugees on the compound, and not vis-à-vis refugees outside the compound, regardless of whether relevant conduct could be attributed to the State.Footnote 10

The Court of Appeal appeared to concur with the District Court, where it held, relying on the Supreme Court’s judgment in Mustafić and Nuhanović, that the State had jurisdiction over the compound in the sense of Article 1 ECHR and Article 2.1 of the International Covenant on Civil and Political Rights (ICCPR). However, this cannot explain why the Court of Appeal then went on to consider acts carried out by Dutchbat outside the compound—Dutchbat facilitating the separation of the men queuing for the buses in the mini safe area—to be wrongful. The only explanation appears to be that jurisdiction is in the end not decisive for the determination of the wrongfulness of an act committed extraterritorially. This appears to flow from the Court’s observation that even if the ECHR and ICCPR provisions were not to apply due to the absence of jurisdiction, this would not make a difference for the actions at bar. The Court of Appeal reached this conclusion by reasoning that the (substantive) norms borrowed from the ECHR and the ICCPR are part of Dutch law anyway, in the sense that a breach of those norms is to be considered as a violation of the duty of care under Dutch tort law.Footnote 11 This is a defensible position. The question is indeed not whether the Dutch State owed human rights obligations to the individuals around Srebrenica, but rather whether Dutchbat’s actions constituted an unlawful act according to the law of the Netherlands. The District Court had earlier held that the agreement between the Netherlands and the UN intending the Dutch battalion to function under the command structure of the UN in Bosnia ‘is governed by the law of The Netherlands since it is The Netherlands that has the distinctive characteristic of putting its troops at the disposal of the UN and there is nothing to show that the agreement is more closely connected to any other country not even Bosnia-Herzegovina whither Dutchbat was sent’.Footnote 12 On appeal, it was not disputed by the parties that Dutch law was the applicable law. When Dutchbat’s conduct is directly reviewed in light of Dutch law, there is no need to consider whether the relevant individuals fall within the Netherlands’ jurisdiction: as soon as such conduct is attributed to the State, it can be subjected to a substantive law review. As the District Court’s judgment demonstrates, a jurisdictional analysis can only serve to restrict the number of actions subject to such a review, to the detriment of the individuals concerned. For that matter, carrying out such a limiting analysis on the basis of the ECHR appears to be in tension with Article 53 ECHR, pursuant to which nothing in the ECHR ‘shall be construed as limiting or derogating from any of the human rights and fundamental freedoms which may be ensured under the laws of any High Contracting Party or under any other agreement to which it is a party’. It has been observed that this safeguard clause is of a pro homine nature, in that it ensures that the legal regime which is most in favour of the individual applies.Footnote 13 In the case at hand, the favourable legal regime, at least as far as the geographic scope of rights protection is concerned, is Dutch tort law rather than the ECHR.

That Dutch tort law applies does not mean that international human rights law becomes irrelevant, however. In fact, the Dutch law of tort has a remarkably open character and defines a ‘wrongful act’ as a breach of a right, or an act or omission in violation of a legal duty or of what is proper in societal relations according to unwritten law.Footnote 14 Going by this definition, substantive international human rights law can inform the determination of whether a wrongful act has been committed. Thus, in Mothers of Srebrenica, Dutch courts inquired whether Dutchbat had discharged its obligation to protect the rights to life and physical integrity as laid down in Articles 2 and 3 ECHR and Article 7 ICCPR.Footnote 15 Eventually, they found that Dutchbat had, in some respects, not done so, as they had evacuated the Bosnian refugees, being aware of the serious risk of the refugees being tortured, mistreated, or killed.

4 The Obligation to Prevent Genocide

The Srebrenica massacre has been characterized as a genocide by both the International Criminal Tribunal for the former Yugoslavia (ICTY) and the International Court of Justice (ICJ).Footnote 16 Therefore, it is arguable that the international norm requiring that States prevent and punish genocide, laid down in Article 1 of the Genocide Convention,Footnote 17 should also play a role in domestic cases pertaining to the events in Srebrenica. Arguably, a court determination on facilitating the commission of genocide has a particular expressive function, as genocide is ‘the crime of crimes’Footnote 18 that heaps moral opprobrium on the facilitator in ways that other violations cannot. In non-criminal cases, domestic courts can make a genocide determination in two ways. Either they issue a declaratory judgment stating that the State has infringed its obligation to prevent genocide, or they hold the State liable in tort for infringing that obligation. Both the District Court and the Court of Appeal dismissed the claimants’ application for a declaratory judgment, but the District Court—although not the Court of Appeal—held the State liable in tort.

The courts refused to issue a judgment declaring that the State had violated its obligation to prevent genocide, on the grounds that the Genocide Convention only holds between States,Footnote 19 and does not contain specific obligations of prevention, but only a general conduct obligation to make maximum efforts to prevent genocide, which requires more specific rules.Footnote 20 The decision that the Genocide Convention is not self-executing (does not have direct effect) is in line with other domestic practice.Footnote 21

That the Genocide Convention is not self-executing need not mean, however, that it has no relevance to proceedings like Mothers of Srebrenica: the Convention could well inform the open duty of care norm in Dutch tort law. Thus, when determining whether the State had committed a tort, the District Court set great store by the State’s obligation to prevent genocide: it ruled, in the context of the evacuation of the refugees from the compound, that ‘Dutchbat must have been aware of a serious risk of the male refugees being killed in a genocide’,Footnote 22 and thus, that ‘the State is liable for the deportation of the able-bodied men who had been staying at the compound […] on account of unlawful acts’.Footnote 23 When contextualizing the duty of care through reliance on relevant norms, including international norms, courts need not be hamstrung by the lack of direct effect of such norms. What is more, in giving shape to the duty of care in specific situations, they could even rely on norms that are not formally binding in the first place,Footnote 24 as long as these norms contain relevant precepts on proper conduct.

One may then fail to understand why the Court of Appeal declined to factor in the obligation to prevent genocide in its tort law analysis, and limited itself to the rights to life and physical integrity.Footnote 25 Still, this may be understandable to the extent that the State may have been aware of imminent acts of torture and killings that in all likelihood would be inflicted upon the refugees, but not that these acts would also constitute genocide.Footnote 26 Awareness of genocide would, after all, require awareness of the Bosnian Serbs’ intent to destroy, in whole or in part, the Bosnian Muslims as a distinct national, ethnical, racial or religious group, in addition to awareness of the material acts of torture and killings. At the time of the evacuation of the refugees, immediately following the fall of Srebrenica, Dutchbat may possibly not have had such knowledge. Given informational deficits, it is in fact not uncommon for ‘facilitators’ to be held liable for other crimes than genocide, even if it later turns out that genocide has effectively been committed. In a 2007 Dutch criminal case, for instance, Dutch businessman A., who had sold chemicals to Saddam Hussein that could (only) be used to make chemical weapons, was convicted for complicity in war crimes committed by the Iraqi regime against the Kurdish population, but not for complicity in genocide,Footnote 27 even if those crimes had been recognized as amounting to genocide.Footnote 28

5 The State’s Liability for Damages

The consequence of a finding of State liability or responsibility for an unlawful or wrongful act is that the State is put under obligation to provide reparation for the injury caused, which typically means that the State becomes liable for damages vis-à-vis the victims. Thus, at first instance, the District Court held the State liable for damages incurred by the men who had been deported from the Dutchbat compound and had subsequently been killed by the Bosnian Serbs. The District Court held the State fully (100%) liable as ‘it is determined with a sufficient degree of certainty that the able-bodied men staying at the compound would have survived if Dutchbat had not cooperated with their deportation’.Footnote 29 The Court of Appeal, however, did not derive from its findings that the State committed unlawful acts by facilitating the separation of the male Bosnian Muslim refugees in the mini safe area, and by evacuating the male refugees from the Dutchbat compound, that the State was necessarily also liable for damages: it could not establish an unambiguous causal link between the State’s unlawful acts and the injury suffered by the victims. In particular, the Court refused to hold the State liable for damages with respect to the separation of the refugees in the mini safe area, as these would likely have been killed by the Bosnian Serbs even if Dutchbat had refrained from the wrongful separation.Footnote 30 It held the Dutch State 30% liable for damages vis-à-vis the next-of-kin of the men on the compound, as these men—unlike what the District Court had decided—were held to only have had a 30% chance of surviving had they been kept there.Footnote 31

The Court of Appeal’s decision evinces that holding the State ultimately liable for damages is not obvious. Even if it can be established that the State facilitated violations committed by others (in the case the Bosnian Serbs) and thus acted wrongfully, a causal connection may not, or may only partially, be drawn between that conduct and the damage suffered by the victims or their next-of-kin. Other causal factors may have contributed to the damage, or the damage may have occurred anyway, even absent the State’s wrongful act. Given the uncertainty surrounding the contributory factors, there is a whiff of informed guesswork regarding the calculation of the damages to which the victims are entitled. One should thus forgive the next-of-kin for being exasperated by the Court of Appeal’s decision that they were entitled to only 30% of the damage they had suffered, as the victims sent away from the compound were considered to only have had a 30% chance of survival anyway. Why the Court decided that this chance was 30%, rather than 20 or 40%, remains unexplained.Footnote 32 Yet perhaps it cannot be explained as one cannot possibly know what exactly would have happened had the Bosnian men stayed on the compound.

The only option to do fuller justice to victims’ interests would be for the State to be held jointly and severally liable for the damage, assuming that some causal contribution by the State can be established. Joint and several liability means that the State is liable vis-à-vis the victims for 100% of the damage, and that it is subsequently incumbent on the State to recover from other parties (potentially) liable for the damage. In the case at hand, these parties would be the Bosnian Serb militia which actually committed the massacre, and the United Nations, to which the Court of Appeal had co-attributed, together with the Dutch State, the decision to evacuate the refugees.Footnote 33 However, joint and several liability does not exist in all legal systems, and it is not clear to what extent it exists in international law.Footnote 34 In particular, Article 48 DARIO, which provides that ‘[w]here an international organization and one or more States or other international organizations are responsible for the same internationally wrongful act, the responsibility of each State or organization may be invoked in relation to that act’, adds that this rule is ‘without prejudice to any right of recourse that the State or international organization providing reparation may have against the other responsible States or international organizations’.Footnote 35 While such a right of recourse may exist against the UN, it is unlikely to exist against the Bosnian Serb militia, which committed another internationally wrongful act, and, for that matter, is no longer in existence.Footnote 36 Therefore, all in all, the Court of Appeal’s determination that the State is liable for only 30% of the damage, while appearing unsatisfactory, is not irrational. What is more, even if (full) damages are not granted, some satisfaction is inherent in a declaratory judgment attesting that the State committed a wrongful act by facilitating human rights violations committed by the Bosnian Serbs.Footnote 37

6 Concluding Observations

A 2015 special issue of this Review highlighted the impact of the events in Srebrenica on the development of several fields of international law, including the law of State responsibility.Footnote 38 As the Mothers of Srebrenica judgments of the District Court and the Court of Appeal show, this development is on-going even twenty years down the road. Despite the courts’ different legal appreciation of the relevant facts, the judgments contribute to the refinement of the law and practice of State responsibility in respect of wrongful acts committed in complex, out-of-area multinational peace operations for a number of reasons. Most importantly, they further cement the ‘effective control’ standard of Article 7 DARIO as the applicable standard for attribution of conduct in UN peace operations, and allow for dual attribution to the troop-contributing State and the UN in cases where both are involved in decision-making. The judgments also confirm that States remain bound by international human rights law when conducting extraterritorial operations, as well as that violations of human rights obligations can lead to liability in tort. Finally, they acknowledge the difficulties of determining a responsible State’s liability for damages in case responsibility is shared with other actors. They are likely to offer inspiration and even guidance to foreign courts confronted with similar questions, provided obviously that tort cases concerning combat operations brought against the State are considered as justiciable.Footnote 39