Introduction
More than 600 actors contributed to shaping the Inter-American Court’s recent Advisory Opinion on the climate emergency, mobilizing a wide range of legal frameworks, including indigenous, national, regional, and international. This convergence underscores the need to examine how multiple normative orders interact beyond the nation-state and how they connect the local with the global. Today, this is explored through the lens of legal pluralism, which seeks to conceptualize these interactions and whose expressions are increasingly visible in transnational arenas. In this light, the Advisory Opinion is particularly significant, as it illustrates how a regional human rights court can bring diverse legal frameworks into dialogue, especially local ones, in responding to the climate emergency, a challenge of planetary scale.
Legal Pluralism and its Latin American Context
Legal pluralism questions the state-centered image of law as a single, unified system, highlighting instead the multiplicity of normative orders. As Antonio Wolkmer emphasizes, it rests on two dimensions: the coexistence of multiple legal orders that are activated by conflicts or consensuses within a given socio-political space, and the recognition that law does not emanate exclusively from the state apparatus.
Three main approaches can be identified. The first, the “classical” view, emerges from colonial and postcolonial contexts. The second shifts to non-colonial contexts and focuses on power relations within capitalist societies, showing how law operates through social, ethnic, and economic hierarchies. The third, postmodern legal pluralism, transcends the nation-state by incorporating infra-state dynamics (indigenous or community law) and supra-state dynamics (international human rights law). This third stage situates pluralism within transnational contexts.
Building on these typologies, John Griffiths distinguishes between “strong” legal pluralism, where non-state legal systems coexist with genuine autonomy, and “weak” legal pluralism, where the state recognizes other normative orders while preserving its primacy. The latter has predominated in Latin America, where state recognition of indigenous law is often subordinated to state structures. Nonetheless, Colombia, Ecuador, and Bolivia have incorporated pluralist dimensions to varying degrees, through multicultural, intercultural, and plurinational models, with the latter representing the most far-reaching form of recognition.
However, as Wolkmer points out, legal pluralism in Latin America is inscribed in a history marked by colonial legacies and persistent forms of authoritarianism, centralism, and dependency. Any pluralist proposal must address not only global and local structural transformations but also emerging “bottom-up” practices led by subjects and collectives in contexts of exclusion. Within this framework, it is essential to analyze how legal pluralism also manifests in its third stage in the region, particularly in connection with transnational contexts.

Global Legal Pluralism and Entangled Legalities
In its global dimension, legal pluralism has focused on analyzing the complexity of interactions among legal systems, particularly in transnational or supranational contexts. This highlights the dynamic ways in which different legal orders interact. In this scenario of normative multiplicity, the notion of entangled legalities developed by Nico Krisch offers a valuable lens. Krisch distances himself from traditional conceptions of law as a single, hierarchical, and coherent system. Instead, he proposes understanding law as a plural web in which norms from diverse origins, such as state, local, indigenous, religious, international, or transnational, interact and are mobilized simultaneously. This plurality, according to the author, is the “common state of legal affairs.”
In other words, this approach means that legal relations are not neatly organized but arise from real-life practices, disputes, compromises, and translations. Different legal systems shape each other and change through these encounters. From this perspective, people and institutions play a key role in driving processes of mutual influence, unequal recognition, and adaptation among different legal orders. These interactions depend on who is involved, the context in which they take place, and the narratives that give them meaning. The important point is that entanglement does not look the same everywhere. In some contexts, interaction among legal systems is intense, while in others it is weak or even blocked. These differences stem from historical developments, institutional paths, and existing power structures. These dynamics are especially visible in the Advisory Opinion OC-32/25 process, where diverse communities brought their own normative systems into dialogue with broader legal frameworks.
Community Submissions and Normative Entanglement
The consultation process of Advisory Opinion OC-32/25 brought together a wide range of actors. Some indigenous communities, in particular, drew on their local norms while also engaging strategically with national, regional, and international legal frameworks.
The submission by the Wiwa and Kankuamo Peoples of the Sierra Nevada de Santa Marta (Colombia) illustrates entanglement by combining their ancestral Law of Origin with constitutional rulings and international instruments such as ILO Convention No. 169 and the American Convention, thereby reinforcing territorial and climate claims. By contrast, in Honduras, where indigenous systems lack recognition, Lenca and Tolupán communities, together with COPINH, MADJ, and Women’s Link Worldwide, relied primarily on international human rights and environmental norms to legitimize their demands under the American Convention. A different approach appeared in the case of Mujeres Unidas en Defensa del Agua: Lago Titicaca (Peru–Bolivia), where communities mobilized the Bolivian Constitution and Law No. 71 on the Rights of Mother Earth, showing how recognition at the domestic level can ground claims mainly in national frameworks.
Taken together, these examples show how entanglement varies from complex webs linking local, national, and international frameworks, to strategies grounded primarily in domestic or international law depending on state recognition and political conditions.
The Court’s Reasoning and Entangled Legalities
Tracing the Court’s reasoning reveals the strengths and limitations of normative interaction at the regional level. To interpret the American Convention and the Protocol of San Salvador in the face of the climate emergency, the IACtHR drew on various sources of international law. Entanglement is evident in the use of norms that guide the IACtHR’s interpretation, such as Article 29 of the American Convention, the Vienna Convention’s interpretive rules, and the “constitutional trinity” of democracy, rule of law, and human rights, as well as in straddling practices that employ principles traversing multiple legal orders without being anchored in any one of them. A key example is the pro persona principle, which allows for the selection of the most protective norms across frameworks, a function especially relevant in the climate context.
The Court also reinterpreted human rights obligations, especially the duty of guarantee, in light of environmental law. Principles such as precaution, pro persona, and due diligence acted as bridges across regimes. Due diligence was redefined through dialogue with humanitarian law, the law of the sea, and environmental law, requiring “reinforced” diligence in the face of climate risks. Cooperation obligations were linked to principles of equity and common but differentiated responsibilities. One of the Opinion’s most innovative developments was recognizing nature as a subject of rights, a reference that, despite only briefly noting national precedents, suggests the influence of domestic experiences at the regional level. The Court also affirmed the obligation not to cause irreversible harm as a jus cogens norm, grounding its authority in effectiveness and general principles of law. Overall, while the Court addressed many community demands, including recognition of indigenous knowledge and the vulnerability of affected groups, its entanglement rests primarily on a transversal articulation of international legal regimes, with limited reference to other frameworks.
Conclusions
The IACtHR’s entanglement rests mainly on international frameworks, articulated through interpretive norms and principles that bridge systems, and thus occurs primarily within the international sphere. References to national frameworks in recognizing nature as a subject of rights reflect a form of bottom-up communication, though the Court did not further develop this. While the importance of local perspectives in addressing the climate emergency is widely acknowledged, convergence at regional and international levels remains hardly bottom-up, sustaining a hierarchical logic of law that hinders communication between the local and the global. Still, in states that have recognized pluralism, such as Colombia and Bolivia, communities have mobilized local norms more effectively in international arenas, reflecting greater capacity for normative mobilization where some degree of legal plurality has been accepted.

Anny Matamoros Pineda is a PhD candidate at the Faculty of Law, Lund University. Her PhD project aims to address the dearth of pluralism and social legitimacy in global constitutionalism. In particular, she seeks to explore whether applying constitutional principles within the international legal sphere can offer a more unified and coherent manner in addressing global emergencies. Through this approach, her research intends to enhance the effectivess and coherence of global responses to international issues, thereby contributing to the advancement of global governance and the protection of human rights.
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