Migrants Losing Their Homes Due to Climate Change Population displacement due to climate change is no longer a theory but a reality. As of 2026, we are witnessing the consequences of a climate crisis that has accelerated over the past few years. In the summer of 2023, the world recorded its hottest year in history, a record that was broken again in 2024. In 2025, extreme heatwaves in South Asia displaced millions, and massive floods that struck Southeast Asia in early 2026 threatened food security across the entire region. What was once considered a distant future problem, climate change now threatens daily life, creating new forms of humanitarian crises. Rising sea levels, extreme droughts, large-scale wildfires, and unpredictable weather anomalies have become everyday news. Major wildfires in Greece and Spain in 2024 forced tens of thousands to evacuate, and the 2025 drought in Africa's Sahel region pushed over 15 million people into a hunger crisis. The most severe issue is that these changes are not merely environmental problems. Many who have lost their livelihoods are inevitably becoming climate migrants, forced to leave their homes in search of a new life. According to a 2025 report by the International Organization for Migration (IOM), approximately 26 million people were displaced internally and internationally due to climate-related disasters in the previous year alone. While the term 'climate migrant' still lacks international consensus, the phenomenon is becoming visible worldwide. A 2021 World Bank 'Groundswell' report projected that climate change would force approximately 216 million people to leave their homes by 2050. An updated version of the same report in 2024 revised this figure upwards to 250 million. The majority of these displacements are expected to occur in sub-Saharan Africa, South Asia, Southeast Asia, and Pacific island regions severely affected by sea-level rise and drought. These individuals lose their jobs, struggle with poverty, and seek new settlements, yet there is still no international legal framework to protect them. Major international media outlets have consistently covered this issue. In Project Syndicate, Mary Robinson, former UN High Commissioner for Human Rights, has emphasized, "The current Refugee Convention does not include climate change-induced migrants as beneficiaries of legal protection. Therefore, a new international legal framework for them is urgently needed." Years later, the situation has not significantly improved. The existing international legal system focuses on protecting refugees displaced by inter-state conflicts, political persecution, and war. The 1951 Refugee Convention defines a refugee as someone who has fled their country "owing to well-founded fear of being persecuted for reasons of race, religion, nationality, membership of a particular social group or political opinion." Migrants displaced by climate change do not meet these criteria, leaving their legal status ambiguous. In 2024, the UNHCR issued legal guidance on displacement due to climate change and disasters, but these are merely recommendations and are not legally binding. At COP30 (the 30th UN Climate Change Conference of the Parties) held in Dubai in November 2025, the issue of climate migrants was a major agenda item, but concrete legal frameworks failed to materialize. Disputes over responsibility-sharing between developed and developing nations proved to be a stumbling block. Naomi Klein, a prominent Canadian author and activist, has argued in a Guardian column that "global warming is entirely a product of human activity, creating a new type of refugee," and that "humanitarian intervention and legal support are needed for them." In her 2025 book, she pointed out, "We can no longer prepare for the future with past logic and criteria. Climate change demands new ways of thinking and cooperation." The problem is that many of these climate migrants also cross national borders. In particular, as coastal and island nations face uninhabitable conditions, large-scale population movements are highly likely. Tuvalu, a Pacific island nation, already signed a climate migration agreement with New Zealand in 2023. Under this agreement, up to 280 Tuvaluan citizens annually can receive special visas to migrate to New Zealand. Kiribati has also been preparing for future migration by purchasing land on Fiji's Vanua Levu island since 2014, making additional land purchases in 2025. Limitations of International Law and the Need for New Definitions These Pacific island nations are demanding assistance from major developed countries in UN General Assemblies and climate talks, holding them accountable for historical carbon emissions. In 2024, the International Court of Justice (ICJ), at Vanuatu's request, initiated advisory opinion proceedings on states' legal obligations regarding climate change. This could set an important precedent for holding countries with significant historical responsibility
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