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In the last few years, the role and status of rebel groupsFootnote 1 have become essential topics of analysis and discussion for a better understanding of current international dynamics. Although contemporary public international law still seems to be predominantly State-oriented, it is undeniable that over the last few decades the increasing participation of rebel groups in the international realm has led to many discussions and complex debates. One of the primary concerns has been how to increase respect for humanitarian rules by rebel groups. Generally, difficulties related to compliance can be linked to various circumstances, such as the unwillingness of the parties to acknowledge that a situation of violence amounts to an armed conflict, the absence of an incentive for the parties to abide by humanitarian rules,Footnote 2 or rebels’ lack of an appropriate structure or resources.Footnote 3 In Compliant Rebels: Rebel Groups and International Law in World Politics, Hyeran Jo meticulously addresses some of these issues, taking into consideration the role of rebel groups in the international realm and focusing on the reasons as to why they might choose to comply with international norms.Footnote 4 This topic is not merely a matter of legal theory, and has an impact on the everyday reality of international humanitarian law (IHL). As inquired by the author at an early stage of the book, “why do some rebel groups comply with international standards of conduct in warfare, while others do not? Are rebel groups aware of international standards? When and why do they make conscious efforts to abide by international rules?”Footnote 5
Running in parallel with an exponential increase of academic literature on the subject,Footnote 6 the author took upon herself the task of putting together a detailed analysis of some of the most transcendental difficulties that affect legal compliance by rebel groups. The book's central thesis is that “legitimacy-seeking” rebels are more likely to comply with international law than those which are “legitimacy-indifferent”.Footnote 7
At this stage, it shall be noted that the number of studies – books and articles – on this issue has been growing for some time, both in the international law and international relations literature.Footnote 8 Although this is probably the first time an exhaustive project on compliance of humanitarian norms by rebel groups has been undertaken, Jo's book should be viewed as part of this trend of publications. Based on a thorough practical analysis and a novel combination between political science and international law, it fills an important gap in the literature – and this is probably its most distinguishing feature, setting it apart from other relevant books on armed groups and international law.Footnote 9 Jo has done a commendable job that is certainly welcome.
The analysis of rebel groups’ compliance is organized into nine chapters, all of which offer a good amount of academic literature and practice. As the book offers an extensive theoretical framework as well as empirical evidence, a detailed review of each chapter is indeed impossible given the inherent limitations of a book review. Therefore, the present reviewer has selectively engaged with specific theoretical topics identified in the first four chapters.
The main challenges are presented in the general introduction. According to Jo, the first of these lies in rebel groups’ strategic and military considerations, since IHL and human rights rules “prohibit the sort of actions that often serve the strategic interests of rebel groups – the sort of actions that may, at times, give them a competitive advantage over government forces”.Footnote 10 The second difficulty is related to the lack of participation of rebels in international law-making processes:
Nor have they ever been signatories to international treaties and conventions, such as the Geneva Conventions. Why would rebel groups follow rules they neither created nor signed on to? Although rebel groups do have obligations under international law even without consent, it is intriguing to observe that some groups voluntarily submit themselves to those rules.Footnote 11
In order to resolve these issues, Jo refers to rebel groups’ pursuit of legitimacy in the eyes of political audiences that care about values consistent with international law at the domestic and international levels.Footnote 12 As she interestingly suggests, if rebels seek legitimacy “in the eyes of key audiences with preferences for rules consistent with international standards, then we are likely to see rebel compliance”.Footnote 13 In this sense, rebel legitimacy is defined as “support and recognition that a rebel group is a viable political authority”.Footnote 14
The second chapter of the book addresses whether these non-State actors are aware of international law and asks whether they are actually bound by this legal regime, and if so, why.Footnote 15 With respect to the former question (do rebels know about international law?), Jo takes as an indicator certain formal commitments made by rebels.Footnote 16 According to her, these can materialize in three possible ways: (1) participation in international negotiations as observers; (2) public expressions of willingness to abide by international law; and (3) the conclusion of agreements with international organizations, such as with the United Nations bodies, or with non-governmental organizations, such as Geneva Call. Regarding the latter question (are rebel groups bound by international law, and if so, why?), Jo differentiates between those rebel groups that explicitly consent to international norms, which are “without a doubt bound by international law”, and those that even without consent still “carry obligations to abide by humanitarian law” due to the customary nature of certain rules.Footnote 17 Although the possibility of having rebel groups directly consenting to their international obligations is an interesting proposal, it is not further addressed in the book, even when it could be used as a tool to enhance their respect for humanitarian rules.Footnote 18 Two additional points shall also be noted in this regard. Firstly, the author deals indistinctively with IHL and international human rights obligations, but these legal regimes present different features when dealing with rebel groups,Footnote 19 and a more extensive analysis could have been useful.Footnote 20 Secondly, despite Jo initially affirming that “rebel groups without consent are bound by international law in a customary sense”, she then states:
The prevention of genocide, now accepted as a global norm, for example, clearly applies to rebel groups. The nature of international law-making restricts the participatory rights of rebel groups. Rebel groups do not take part in negotiating international laws and do not have institutional means to ratify the laws. Their obligations derive from being under the authority of a state party or by issue of the laws being natural laws applicable to all subjects of international politics.Footnote 21
In these lines, Jo makes a distinction in the application of jus cogens rules and the rest of international norms. It remains unclear, however, why one framework would apply directly upon the non-State entity, while others would have to be accepted beforehand by the State fighting against the rebel group. Additionally, how these scenarios interplay with the abovementioned proposal on rebels directly consenting to their international obligations could have been further explored.
The third chapter is the most important theoretical part of the book. Here, Jo proposes her legitimacy-based theory of rebel compliance, according to which rebel groups with “legitimacy-seeking” features are more likely to comply with international norms than their “legitimacy-indifferent counterparts”. In the words of the author, for most rebels there is something to be gained by complying with international law: recognition, legitimacy and reputation. As she explains:
Recognition provides international credibility around the world, and thus a stronger strategic position for groups in their struggle against an opposing government at home. Legitimacy also gives rebel groups greater authority compared with their national government, especially in instances where the government itself lacks legitimacy to govern. Having a reputation as a complier with international law can earn rebel groups a medal of good citizenship in the long run.Footnote 22
In examining the constituencies of rebel groups, Jo interestingly suggests that both the government and international society play a role in making or breaking rebel compliance. This is the reason why a comprehensive analysis of rebel groups’ behaviour must take into account relevant interactions among rebels, governments and international actors.Footnote 23 The author affirms in this vein that these non-State actors do consider international law as legitimate when they have some expected political advantages to be gained by complying. Therefore, decisions to comply or not are mostly driven by the need to obtain legitimacy in order to ensure group survival.
The fourth chapter represents the bridge between this theoretical framework and empirical evidence. Since legitimacy-seeking motivations of rebel groups are, according to Jo, the most important determinants of their possible compliance, she underlines three possible indicators to understand their level of respect: (1) the existence of a political wing within a rebel organization; (2) a secessionist aim with clear governance objectives in an autonomous region; and (3) foreign support under the influence of human rights groups.Footnote 24 These elements serve to provide an indication that the group is “legitimacy-seeking”, and constitute a novel argument as to why rebels comply with international rules.
Although this proposal seems helpful towards having more respected legal regimes, the author also refers to the link between the non-State entity and the domestic law of the State against which it is fighting. In this sense, when dealing with the first indicator, Jo recognizes that if opposing governments allow rebel groups to enter the political sphere, “rebels will then have less incentive to resort to violence unnecessarily”.Footnote 25 The practical consequences of considering this, however, are not thoroughly envisaged. To that end, certain real-world scenarios are difficult to solve under this proposal. For instance, it is unclear how recognition by governmental authorities might operate in complex conflicts that take place in the territory of a given State between a rebel group and a third State. Which opposing government should recognize the rebel group as a political party to enhance its compliance? Moreover, even if this theory could apply to certain contexts, it is difficult to imagine that every State will recognize a rebel group as having some sort of legitimacy under its domestic legal system; and during an armed conflict, would a rebel group be allowed to present candidates for an election while hostilities are still active? Finally, would this political acceptance also recognize as lawful certain acts that naturally challenge the sovereignty of States, such as the establishment of courts by rebel groups or their provision of education in the territories under their control?Footnote 26
In any case, based on the abovementioned indicators, Jo presents three hypotheses that are worth noting. Firstly, that rebel groups with political wings are more likely to comply with international norms; according to Jo, this prospect would be stronger if these political wings had a firmer control over the groups’ military sections. Secondly, that rebel groups with secessionist aims are more likely to comply with international law. Since these non-State entities can establish social relations with civilians because of family or ethnic ties, the expectation is that groups with social relations are more likely to refrain from violence against civilians. Thirdly, Jo argues that rebels who rely on foreign sponsors with human rights organizations are more likely to comply with international norms. Those groups that open themselves to organizations such as the International Committee of the Red Cross (ICRC) or Geneva Call, according to Jo, are more likely to make commitments to international law, and therefore positively change their behaviours.Footnote 27
Since there is a vast number of humanitarian rules that could be studied in light of these hypotheses, Chapters 5, 6 and 7 narrow the empirical analysis of the book to three main humanitarian issues: the killing of civilians, the use of child soldiers, and rebel groups’ decisions with regard to granting the ICRC access to their detention facilities.Footnote 28 At the centre of Jo's inquiry is the source from which the book draws its information: the Rebel Groups and International Law database, which was exclusively built for the book project and includes both qualitative and quantitative information about rebel groups’ institutional “and organizational profiles, and their humanitarian and human rights behaviors”.Footnote 29 The study of these issues is well researched and structured, and every chapter thoroughly combines a general factual approach with a specific case study in which the author shows how the abovementioned indicators influenced the group's respect for the law.Footnote 30 Chapter 8 compares and contrasts these three topics, highlighting as a common finding that achieving strategic legitimacy influences rebel groups’ decisions to comply with international norms in specific ways. The final chapter serves as a conclusion.
As can be seen from Jo's research, some rebel groups actually care about international law, and compliant rebels should not be seen as a rare phenomenon. Groups complying with international law are indeed numerous, specifically among those legitimacy-seeking groups with articulated norms and ties to domestic populations. Contrary to the conventional thinking that rebel groups are violent and constantly breach humanitarian rules, the present book argues that some rebel groups are not only aware of international law but are also committed to adhering to its rules, and often try to “advance their rebellion by exploiting the normative structure of international law”.Footnote 31 Although a more detailed analysis on the legal framework would have been useful (particularly on the reasons why rebels are bound by this legal regime), Compliant Rebels still represents an excellent addition to the literature dealing with generating respect for humanitarian rules, and one that is unique in its scope and fresh in its approach. For the purpose of better protecting victims in conflict situations, rebel groups should not be ignored, but should rather be further studied and engaged.