ICJ Advisory: A New Dawn for Climate Justice and Human Rights

ICJ Advisory: A New Dawn for Climate Justice and Human Rights

RITURAJ PHUKAN

In a historic decision, the International Court of Justice (ICJ) recently delivered a comprehensive advisory opinion affirming that every person has the human right to a “clean, healthy, and sustainable environment.”

This ruling not only signals a paradigm shift in climate governance but also elevates the environment to the legal status of a fundamental human right, compelling nations to act decisively or face potential legal consequences.

The Genesis of the Ruling

Commissioned by the UN General Assembly in 2023 at the behest of vulnerable nations like Vanuatu, Tuvalu, and the Marshall Islands, the ICJ’s opinion came after meticulous hearings and substantial advocacy by small island developing states (SIDS) and environmental defenders.

These nations are on the frontlines of climate impacts: rising sea levels threaten their existence, acidifying oceans devastate marine life, and intensified storms wreak havoc on communities.

The case gained momentum as litigants argued that climate change is not merely an environmental issue but a profound human rights crisis. The UN’s request was rooted in the urgency expressed by the international community, recognizing that legal accountability could motivate stronger climate action.

An Unprecedented Legal Shift

The ICJ’s advisory opinion is groundbreaking for several reasons. First, it explicitly states that international treaties addressing climate change, such as the United Nations Framework Convention on Climate Change (UNFCCC) and the Paris Agreement, impose binding legal obligations on signatory states.

Second, failure to adhere to these obligations can constitute an “internationally wrongful act,” exposing states to liability and reparations, even though the ICJ’s rulings are non-binding in themselves.

The court reaffirmed that climate change is a “serious threat to peace, security, and human rights,” reiterating that states have a duty to prevent, mitigate, and adapt to environmental harm resulting from greenhouse gas emissions. Most notably, it emphasized that environmental rights are human rights—an assertion aligned with decades of UN work advocating for climate justice.

The Legitimization of Environmental Human Rights

The concept that environmental health is a human right is not new but has lacked widespread legal recognition until now. Previously, courts like the Netherlands Supreme Court (2021) declared that the Dutch government has a duty to protect its citizens from climate change impacts, framing this as a human rights issue. Similarly, the European Court of Human Rights recognized in 2021 that governments must enhance their efforts to safeguard citizens from climate-related risks.

The UN Office of the High Commissioner for Human Rights (OHCHR) has consistently highlighted that climate change exacerbates numerous human rights violations, including the right to life, health, housing, and an adequate standard of living. Its 2021 report emphasized that climate inaction could amount to violations of these rights—conceptually reinforcing the ICJ’s new legal stance.

Impacts on Vulnerable Nations

The ICJ’s ruling empowers small island nations and marginalized groups, who bear disproportionate burdens despite contributing minimally to global emissions. For instance, the Pacific island nations, including Vanuatu and the Maldives, are experiencing sea-level rises roughly four times the global average, threatening their very existence.

According to the UN Development Programme (UNDP), climate change jeopardizes decades of development gains and pushes vulnerable populations further into poverty and displacement. The Intergovernmental Panel on Climate Change (IPCC)’s Sixth Assessment Report (2021) warns that without urgent mitigation, these impacts will intensify, with millions of climate refugees emerging by 2050.

The Role of International Law and Future Litigation

The ICJ’s opinion could herald a new era where climate accountability is embedded into international law. It provides a foundation for legal actions, such as lawsuits against governments or corporations that violate their climate obligations. Already, countries like the Netherlands and France have seen courts ruling that governments owe a duty of care to their citizens regarding climate risks, setting legal precedents for future cases.

In 2020, a landmark case in the Netherlands saw the Dutch Supreme Court affirm that the government’s climate policies were insufficient and ordered it to cut emissions more ambitiously to protect the rights to life and well-being. The“Urgenda case” underscored how judicial systems can enforce environmental obligations and protect vulnerable populations.

The Broader UN Framework and Global Strategic Response

The ICJ’s opinion dovetails with the UN’s broader climate and sustainable development agenda. The 2030 Agenda for Sustainable Development, with its 17 SDGs, explicitly links climate action (Goal 13) with health, justice, economic growth, and equality. The UN Climate Change High-Level Champions have emphasized that legal accountability and human rights must underpin climate policies, a view reinforced by the ICJ’s ruling.

Similarly, the UNFCCC’s Paris Agreementaims to limit global temperature rise to 1.5°C. The ICJ’s affirmation that treaty breaches constitute wrongful acts elevates the legal weight of these commitments and encourages countries to honour them.

UNEP’s latest reports warn that global greenhouse gas emissions need to decline by about 45% from 2010 levels by 2030 to meet climate targets. The ICJ’s legal reinforcement now provides a new lever for civil society and governments to hold nations accountable and accelerate commitments.

The Challenges of Enforcement and Political Will

While the ICJ’s opinion signals a significant normative shift, a core challenge remains: enforcement. The court has no mechanism to compel countries to comply. Enforcement depends on political will, domestic legal action, and international cooperation.

Major emitters like the United States, China, and Russia have historically resisted binding legal obligations beyond political commitments. The US, for instance, rejoined the Paris Agreement in 2021 after withdrawing under previous administrations. Still, substantial gaps remain in implementation, and legal obligations could go a long way to close these gaps.

Harnessing the Power of Civil Society and Indigenous Knowledge

The global climate movement, including youth activists, indigenous communities, and NGOs, are increasingly leveraging legal avenues to demand accountability. The UN’s Indigenous Peoples’ Forum highlights how indigenous knowledge systems can inform climate resilience and adaptation strategiesaligning with the ICJ’s recognition of the environment’s human rights significance.

Furthermore, youth-led litigation, such as Juliana v. United States, demonstrates the rising power of legal actions in shaping climate policy. The ICJ’s opinion could catalyse more such suits, pressuring governments to act ethically and legally.

The Human Toll of Climate Change in Assam

While international legal frameworks and global commitments shape the overarching fight against climate change, the impact on local communities remains stark and visceral. India, home to over 1.4 billion people, is among the most vulnerable to climate-induced disasters.

One of the most affected states is Assam; In recent years, Assam has witnessed an alarming rise in extreme weather events, particularly heatwaves and floods. The ongoing heatwaves and statewide drought, with deficit rainfall in 27 of the 35 districts, is alarming.

Deaths attributed to heatwaves have been increasing.  According to the state’s health department, over 400 deaths were directly attributed to heatwaves, highlighting a growing, often overlooked, human toll. The vulnerable populations—elderly, children, outdoor laborers, and marginalized communities—bear the brunt of these brutal heatwaves, suffering dehydration, heat strokes, and even death.

Moreover, Assam’s riverine landscape is increasingly inundated by annual floods, which have become more intense and frequent due to changing monsoon patterns and glacial melt in the Himalayan ranges.

The Flood and River Erosion Situation Report 2023 states that over 40% of Assam’s land area is affected annually, displacing hundreds of thousands of people and destroying homes, crops, and livelihoods. The persistent flooding erodes communities, damages infrastructure, and hampers access to healthcare, education, and sanitation.

The projections for Assam’s climate future are grim. The Indian Meteorological Department (IMD) warns that the state could face rising temperatures by 1.5°C to 2°C over the next two decades, with monsoon patterns becoming more erratic. This will lead to worsened droughts in some parts and catastrophic floods in others, creating a cycle of crisis for local communities. The loss of biodiversityis also a stark indicator of ecological imbalance driven by climate shifts.

These local realities underline a crucial point: while global legal rulings like the ICJ’s opinion are vital, their success hinges on addressing ground-level vulnerabilities. Climate resilience in Assam requires urgent investment in adaptive infrastructure, better disaster preparedness, and inclusive policies that prioritize the most vulnerable. The stories of heatstroke fatalities and flood-stricken communities must serve as stark reminders that climate change is no longer a distant threat but an immediate and life-threatening reality for millions in India.

Conclusion: A Call to Action

The ICJ’s landmark advisory opinion signifies a decisive shift in the global narrative that recognizes climate change as a fundamental human rights issue with legal ramifications. This momentum, however, must translate into robust action at all levels: international, national, and local. The plight of Assam and other vulnerable regions exemplifies the human face of this crisis, highlighting urgent needs for adaptation, resilience, and justice.

The UN’s comprehensive framework, supported by reports from UNEP, UNDP, and human rights bodies, underscores that climate justice is inseparable from human dignity. As the world moves forward, it must do so with the understanding that protecting the environment is an ethical obligation, a legal duty, and a cornerstone of sustainable development.

The global community must use the “advisory opinion” of the ICJ to turn its commitments into concrete action while ensuring that no one, whether in the Pacific islands or Assam’s floodplains, is left behind or silenced in the fight for a sustainable, equitable future.The presiding judge on Wednesday acknowledged that international law had “an important but ultimately limited role in resolving this problem,” and said a lasting solution will need the contribution of all fields of human knowledge “to secure a future for ourselves and those who are yet to come”.

Rituraj Phukan: Founder, Indigenous People’s Climate Justice Forum; Co-Founder, Smily Academy ;National Coordinator for Biodiversity, The Climate Reality Project India; Member, IUCN Wilderness Specialist Group; Commission Member – IUCN WCPA Climate Change, IUCN WCPA Connectivity Conservation, IUCN WCPA Indigenous People and Protected Areas Specialist Groups, IUCN WCPA South Asia Region and IUCN WCPA-SSC Invasive Alien Species Task Force; Member, International Antarctic Expedition 2013; Climate Force Arctic 2019 ; Ambassador, Marine Arctic Peace Sanctuary. Rituraj Phukan is the Climate Editor, Mahabahu and Convenor, Mahabahu Climate Forum.

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