Climate does not wage war, but it can make -war inevitable

A systemic geopolitical approach to 21st-century conflicts

Introduction: Understanding the root causes of conflict

In a previous article, we explored health as a vector for peace. This reflection led us to a more fundamental question: why do conflicts emerge?

Traditional geopolitics often seeks to identify a specific cause: a disputed territory, a strategic resource, or a political or ideological rivalry. However, observation of the contemporary world demonstrates that wars are rarely the result of a single factor.

Conflicts generally emerge from a complex interaction of economic, social, demographic, environmental, technological, religious, and political variables. Understanding these interactions is precisely the objective of systemic geopolitics.

Within this framework, climate has become one of the most widely debated factors. Some experts predict the emergence of future “climate wars.” Others, on the contrary, argue that climate change is merely an environmental issue with no direct connection to international security.

As is often the case in complex systems, reality lies somewhere between these two extremes.

Climate does not mechanically create wars. However, it alters existing balances and can transform latent tensions into open crises.

The real question, therefore, is not: “Does climate cause wars?” Rather, it is: How does climate change influence the mechanisms that lead to conflict?

Climate: A global systemic disruptor

Human history has been built upon a foundation of relative climatic stability. Agriculture, cities, trade networks, borders, and political structures developed within a relatively predictable environment. Climate change is now challenging that balance.

Rising temperatures, droughts, floods, massive wildfires, extreme storms, and rising sea levels are not merely environmental phenomena.

They directly affect:

• Agricultural production;• Access to water resources;• Infrastructure;• Supply chains and logistics networks;• Financial markets;• Population movements;• The stability of states.

From a systemic perspective, climate acts as a disruptive force that simultaneously impacts multiple interconnected subsystems of the contemporary world.

Hypotheses

Hypothesis 1: Climate as a multiplier of existing tensions

Climate change is generally not the root cause of conflict; rather, it acts as an amplifier of existing vulnerabilities. When a region is already affected by poverty, political instability, or communal tensions, climate-related impacts can become the trigger for a broader crisis.

For example, a prolonged drought may lead to:

• Reduced agricultural yields;• Rising food prices;• Increased indebtedness among local populations;• The weakening of state institutions;• Growing social unrest.

In this context, the climate crisis acts as a revealer of pre-existing structural fragilities.

War is therefore not caused by climate itself, but by the inability of a system to absorb and manage the resulting shock.

Hypothesis 2: Climate migration as a factor of destabilization

One of the most visible consequences of climate change is population displacement. When water resources disappear, land becomes unproductive, or natural disasters become more frequent, people naturally seek safer and more viable regions. This phenomenon is already occurring in several parts of the world.

In the future, some experts estimate that several hundred million people could be affected by climate-induced migration.

Systemic geopolitics does not view migration itself as a threat, since migration has always been a feature of human history. The real challenge lies in the capacity of host societies to integrate these populations successfully.

When infrastructure, employment opportunities, housing, or public services become insufficient, tensions can emerge. Climate migration may then:

• Strengthen populist movements;• Deepen identity-based divisions;• Fuel communal tensions;• Weaken political stability.

The primary risk therefore does not stem from population movements themselves, but from the failure to anticipate and manage them effectively.

Hypothesis 3: Climate as a driver of global economic crisis

Public debate often focuses on the environmental consequences of global warming. Less attention is given to its economic implications, although these could be equally significant.

Extreme climate events directly affect:

• Agriculture;• Energy production;• Transportation systems;• Insurance sectors;• Infrastructure;• Global supply chains.

A major drought can impact several continents simultaneously. Poor harvests in a strategically important region can trigger price increases on a global scale. The most vulnerable economies become particularly exposed to these shocks.

History shows that economic crises often create favorable conditions for:

• Social unrest;• Political radicalization;• Internal conflicts;• International rivalries.

From a systemic perspective, climate therefore acts not only as an environmental challenge but also as a major source of global economic risk.

Hypothesis 4: Conflicts over resources

The issue of water is often presented as the symbol of future climate-related conflicts. This hypothesis deserves serious consideration. Several major rivers flow through states whose interests do not always align:

• The Nile;• The Indus;• The Mekong;• The Tigris and Euphrates;• The Jordan River.

As resources become scarcer, tensions tend to increase. However, water is not the only resource concerned. Agricultural land, fisheries, strategic minerals required for the energy transition, and newly accessible areas in polar regions are also becoming objects of competition.

Scarcity often intensifies rivalry, but it can also encourage cooperation.

Everything depends on the quality of the institutions capable of organizing equitable resource sharing.

Hypothesis 5: The new geography of power

Climate change is gradually reshaping the map of global power. Some regions are becoming increasingly vulnerable, while others are gaining strategic importance.

The Arctic provides perhaps the most striking example. The melting of sea ice is progressively opening:

• New maritime routes;• Access to energy resources;• Opportunities for the exploitation of strategic minerals.

This transformation is attracting the attention of major powers. Russia, China, United States, and several European countries are already strengthening their presence in the region.

Climate change therefore not only disrupts existing balances of power; it also creates new arenas for geopolitical competition.

Hypothesis 6: Climate as an opportunity for cooperation

A systemic approach also requires examining positive scenarios.

Faced with a global threat, states may choose cooperation rather than confrontation. Climate change has a unique characteristic: no nation can solve the problem alone.

This interdependence can encourage:

• The development of international agreements;• Technology transfers;• Energy cooperation initiatives;• Regional solidarity mechanisms;• Joint investments in climate adaptation.

Climate could therefore become a factor of international integration, comparable to the role that global health has occasionally played during major pandemics.

The Systemic perspective: Moving beyond the trap of simplistic explanations

The most common mistake is to search for a single cause of conflict. Wars generally emerge when multiple vulnerabilities converge simultaneously.

A system becomes unstable when the following factors accumulate:

• Economic difficulties;• Identity-based tensions;• Poor governance;• Demographic pressure;• Competition for resources;• Environmental disruptions.

Climate change then acts as a catalyst. It accelerates existing imbalances and can push a system toward either cooperation or conflict. The outcome depends largely on the system's capacity for resilience and adaptation.

Conclusion: The real question is resilience

Climate is not a mechanical cause of war. Nevertheless, it is one of the most significant risk multipliers of the 21st century. The most resilient societies will be able to transform this challenge into an opportunity for innovation and cooperation, while the most fragile societies risk seeing their existing vulnerabilities deepen and intensify.

The central issue, therefore, is not purely climatic. It is systemic: How can states and societies strengthen their capacity to absorb environmental, economic, demographic, and social shocks?

This question will likely become one of the defining geopolitical challenges of the coming decades. The answer will determine whether climate change becomes a driver of instability and conflict or a catalyst for greater cooperation, adaptation, and collective resilience.

Frequently Asked Questions (FAQ)

Does climate change directly cause wars?

No. Climate change does not directly cause wars. It primarily acts as a risk multiplier, amplifying pre-existing political, economic, social, or environmental tensions.

Will climate migration become a major geopolitical issue?

Yes. Climate-induced population movements could become one of the most significant political, economic, and social challenges of the coming decades.

Are water wars inevitable?

No. History shows that cooperation over shared water resources is often more common than conflict. However, such cooperation requires strong institutions and effective governance mechanisms.

Why does climate influence the global economy?

Because it directly affects agriculture, energy production, infrastructure, transportation systems, and international supply chains. Climate-related disruptions can therefore generate economic instability on a global scale.

Can climate change encourage international cooperation?

Yes. The need to respond collectively to a shared global threat can strengthen international governance mechanisms, foster technological cooperation, and promote coordinated policy responses.

Why use a systemic geopolitical approach?

Because no conflict can be explained by a single variable. Wars generally result from complex interactions among economic, demographic, political, environmental, technological, cultural, and social factors.

What are the next topics in this series on the systemic causes of conflict?

This series will successively explore several key structural factors:

• Energy and the global competition for resources;• Demography and population imbalances;• Religion as a factor of cohesion or division;• Emerging technologies and artificial intelligence;• Critical resources and strategic minerals;• New forms of global governance.

The objective is not to identify culprits but to understand the systemic mechanisms that transform tensions into conflicts, to better anticipate and prevent them.