Syed Hamza Mahroof
Strategic stability in South Asia has been seen through the lens of deterrence, military modernization, territorial disputes, and great power competition for decades. Traditionally, the focus of security analysts and policymakers has been on the conventional asymmetry between India and Pakistan, the evolving strategic role of China in the region, and the unresolved Kashmir dispute. However, Climate change has emerged as a rapidly growing threat that seems to be slower in appearance but possesses potential long term consequences along with all these familiar geopolitical fault lines.
Climate change has grown into more than an environmental threat. It is capable of reshaping regional stability, worsening economic fragility, and increasing the likelihood of political and social unrest across South Asia. It is a multidimensional security challenge, and in a region that is burdened by fragile government structures, water scarcity, and demographic pressure, it can no longer be kept outside of the security discourse.
South Asia is one of the most vulnerable climate regions in the world. Irregular monsoon patterns, floods, glacial melting in the Himalayas, and severe rising temperatures are already affecting millions across the region. The 2022 floods in Pakistan demonstrated the fact that state capacity can be overwhelmed by environmental disasters, economic systems can be disrupted, and long-term humanitarian crises follows. Moreover, the fragile intersection between national security and climate vulnerability was exposed by water stress across the region and recurring heatwaves in India.
South Asia’s reliance on shared water systems and dependence on agriculture make the region highly susceptible to climate-induced instability. Traditional security threats arise from identifiable military actions, while climate threats are transnational and politically destabilizing in indirect ways. A broader understanding of strategic stability is required that perceives environmental insecurity as a catalyst for geopolitical tension.
The climate change’s impact on water security in South Asia can be considered as one of the most dangerous dimensions of climate change. The region possesses a greater emphasis on river systems originating from the Himalayan glaciers, many of which are now melting at alarming rates. The pressure is intensified on already stressed water resources by the expanding population’s growing demand and changing rainfall patterns. Despite decades of hostility, the Indus Water Treaty has stood out as one of the most important agreements between India and Pakistan.
However, the framework is seen to be strained by pressure exerted by climate change measures. Further, the abeyance of the Indus water treaty was seen after the Pahalgam Incident in 2025, which complicated the relations between the two countries. Moreover, broader strategic rivalries may get intertwined with hydro-political tensions due to the deepening of water scarcity. It has been seen that in the case of bilateral relations, mistrust dominates in nuclearized environments. Thus, perceptions of fuel crisis instability and existential threat can get magnified due to resource insecurity. Climate change has the ability to transform water from a shared resource into a strategic weapon.
The economic foundations of South Asian states have been greatly threatened by climate insecurity. It has been noticed that, particularly in rural areas, agriculture remains a major source of livelihood and employment across the region. Extreme water shortages and crop failures directly affect inflation and migration patterns. In case of countries that are already facing economic pressures, public confidence in state institutions gets eroded, and therefore, a governance crisis follows due to climate disasters.
A combination of political polarization and economic instability, along with social inequality, creates fertile ground for radicalization and internal unrest. Environmental degradation has greatly affected urban infrastructure and agricultural productivity in India. While Pakistan’s economic resilience has been strained due to energy shortages.
Moreover, climate-induced displacement and rising sea levels have created existential risks for small South Asian states like Bangladesh. These pressures directly affect regional security calculations. Reduction in crisis management capacity and diversion of attention from cooperative regional frameworks can be noticed in the case of weak economies.
Forced migration is one of the most destabilizing consequences of climate change. Displacement of large-scale population within or across the borders may get triggered due to rising sea levels, resource depletion, and desertification. In South Asia’s case, unmanaged migration becomes highly sensitive due to the densely populated geography of the region. Increased competition over resources can arise due to climate-driven displacement, which is further followed by intensification in ethnic tensions, thus creating new political fault lines.
Historically, Interstate tensions and political instability usually arise due to mass displacement. For South Asia, the coming decades can see climate migration as a major source of friction, considering the fact that borders are already politically contested and heavily militarized.
Traditionally, South Asia’s strategic stability has been understood on the basis of a military-centric approach. While regional security places great emphasis on nuclear deterrence, climate change has certainly exposed the limitations of viewing stability solely through military balances and doctrines. Societies facing resource insecurity and environmental collapse can’t ensure strategic stability. Long-term peace can’t be sustained in a region that is suffering from mass displacement, water shortages, and institutional fragility, regardless of deterrence equations.
Therefore, governments should include climate resilience in national security planning, and it should be viewed as a strategic necessity rather than an act of goodwill. Frameworks should be introduced for the expansion of bilateral and regional mechanisms for South Asian states in areas such as food security coordination, disaster response, and climate adaptation.
The security landscape of South Asia has been redefined due to climate change. It is a central strategic challenge that can influence regional peace and domestic stability. Management of shrinking resources by regional states, building cooperative mechanisms, and protecting the vulnerable population will define the future of South Asia’s strategic stability rather than just depending on missiles and deterrence capabilities. Failure to address climate insecurity in South Asia can ultimately become one of the greatest strategic risks in recent decades, considering the fact that the region is already living under the shadow of nuclear competition.
The author is an International Relations graduate from the University of Azad Jammu and Kashmir, Muzaffarabad. While having been a former Research Intern at Centre for International Strategic Studies (AJK) and Army Institute of Military History, He has practical experience in research work encompassing areas like evolving geo-economic and political dynamics of South Asia, while having particular emphasis on climate resilience and climate change.
