Beyond scarcity

The geopolitics of the twenty-first century are no longer shaped only by oil routes, gas pipelines, and military alliances, but also by the interactions between water scarcity, energy transitions and food security. Geopolitical fragmentation, the disruption of global value chains, and the accelerated depletion of the environment are all pushing the Water-Energy-Food (WEF) Nexus to become a key paradigm for resilience, competitiveness and power.

Recent crises have made it impossible to ignore the interlinkages. For instance, the pandemic exposed the fragility of global food logistics, while the war in Ukraine has threatened energy and agricultural markets, generating crises that require massive interventions and a redesign of priorities in most developed countries. Prolonged droughts across Southern Europe, North Africa and the Middle East are showing the vulnerability of most agrifood systems and how their weaknesses propagate into societies, generating economic, social and political instabilities. What emerges is a new geopolitical equation: resource security can no longer be approached in silos; it requires multidimensional and multilevel approaches.

Water is necessary for food production and energy generation. Energy is required to produce and distribute water and food. Food systems themselves shape both water demand and energy consumption. These connections are becoming increasingly strained, and isolated interventions may generate unintended consequences in other domains.

From resource competition to systemic interdependence 

Climate change is intensifying pressure on already vulnerable regions, particularly the Mediterranean Basin, one of the fastest-warming areas in the world. Rising temperatures, declining rainfall, and more frequent droughts are amplifying structural water scarcity. Recent scientific evidence suggests renewable freshwater availability in the Eastern and Southern Mediterranean is sharply declining, intensifying competition among agriculture, energy generation, tourism, and urban consumption. Such dynamics are not confined to environmental concerns; they also shape geopolitical relations and investment strategies. Countries facing chronic water stress are becoming more dependent on food imports, exposed to price volatility, trade disruptions, policy changes, and geopolitical shocks.

The global race toward decarbonization is reshaping energy systems, potentially intensifying pressure on land and water resources. Solar energy expansion, desalination projects, renewable hydrogen ambitions, and modern irrigation systems all require a careful balancing of trade-offs.

The paradox of technological solutions 

An important lesson emerging from recent research is that infrastructures and technological innovations alone are insufficient. Efficiency gains can paradoxically worsen resource depletion if governance frameworks remain weak.

Spain offers a compelling example. Between 2002 and 2015, one of the world’s largest irrigation modernization programs significantly improved irrigation efficiency. Yet the anticipated water savings largely failed to materialize. Instead, greater efficiency incentivized expanded water use, increasing pressure on already stressed resources. A similar paradox can be observed in North Africa. Morocco’s adoption of solar-powered irrigation systems improved farmers’ access to water and reduced dependence on fossil fuels. However, in the absence of adequate groundwater regulation, lower pumping costs accelerated aquifer depletion. Tunisia presents another cautionary case. In the Kebili region, solar-powered groundwater extraction created short-term agricultural benefits but also intensified long-term water stress. These examples illustrate a fundamental principle of Nexus governance: technology without institutional coordination risks generating maladaptation.

This challenge extends to energy policy itself. Renewable energy expansion is often presented as inherently sustainable, yet agrivoltaics and bioenergy systems may compete with agriculture for land and water. If poorly planned, energy transition strategies can inadvertently undermine food production or ecosystem resilience. The issue is not whether to accelerate clean energy deployment, but how to design transitions that recognize systemic interdependencies.

Governance as the missing link  

The greatest obstacle to Nexus implementation lies not in technology, but in governance. Most public institutions remain organized in silos. Ministries of agriculture, energy, environment, and infrastructure frequently operate independently, often pursuing competing objectives. Such fragmentation limits the effectiveness of adaptation strategies and increases the risk of policy incoherence.

For instance, subsidies encouraging intensive irrigation may undermine national water conservation goals. Energy incentives that prioritize land-intensive infrastructure can unintentionally endanger biodiversity and agro-ecosystems. Food security policies targeting domestic production may increase input use, threatening water and energy security. Integrated governance mechanisms should be preferred, while regional and inter-country cooperation may prove indispensable for reducing tensions and improving collective resilience.

Lessons may be drawn from the Mediterranean. International initiatives supported by regional scientific networks, multilateral institutions, and cross-border partnerships increasingly seek to operationalize Nexus thinking through coordinated planning, shared data systems, and transnational infrastructure strategies. However, implementation remains uneven, largely due to weak governance capacity and financial constraints.

Investment priorities in the age of scarcity 

If the WEF Nexus offers a diagnostic framework, it also points toward new investment priorities. Infrastructure spending is no longer simply about expanding capacity. It increasingly concerns creating enabling ecosystems capable of fostering resilience, integration, and efficient use of resources. Investments that build on the Nexus are likely to be both promising and strategic.

First, water-smart energy systems would improve resilience and adaptation, two essential features in our fast-changing world. Energy production itself depends heavily on water, especially thermal generation and hydropower, and climate-induced reductions in water availability threaten energy reliability. Renewable energy systems with lower water intensity—particularly solar and wind—could reduce systemic vulnerability. 
Second, climate-resilient agri-food systems are also promising investments. Agroecological practices, precision irrigation, treated wastewater reuse, and climate smart agriculture offer opportunities to improve food security while reducing pressure on natural resources. Agrivoltaics—the integration of solar panels with agricultural production—are effective examples of how to exploit synergies between the agriculture and energy sectors.

Third, data and early-warning systems will become increasingly critical. Resource governance remains fragmented across many vulnerable regions, often hindered by incomplete information and poor institutional coordination. Better climate services, predictive analytics, and cross-sector monitoring systems could significantly strengthen decision-making capacity and help develop sustainable, efficient, and resilient value chains.

How major powers are investing 

Investments may prove inefficient, if not misguided, when projects are designed in isolation, without considering the enabling ecosystems and conditions necessary to ensure their long-term sustainability. In response, the European Union has placed the Nexus logic at the core of its Global Gateway Africa-Europe Investment Package, mobilizing €150 billion to support sustainable development across the African continent. Investments are being directed toward renewable energy and green hydrogen, climate-resilient agri-food systems, biodiversity protection, water security, and climate adaptation, to strengthen and accelerate the green transition. Similarly, the G7 has promoted large-scale infrastructure and investments through the Partnership for Global Infrastructure and Investment (PGII) to mobilize up to USD 600 billion by 2027 in support of green energy transition, value chain resilience, digital and transport connectivity, sustainable health systems, and inclusive development in partner countries. The United States has pursued many of the objectives associated with the Water-Energy-Food Nexus. The Infrastructure Investment and Jobs Act and the Inflation Reduction Act together mobilize hundreds of billions of dollars for water infrastructure, renewable energy, climate resilience, and climate-smart agriculture. China's approach is less explicitly framed around the Water-Energy-Food Nexus, yet the Belt and Road Initiative has mobilized approximately USD 215 billion in 2025 across infrastructure, energy, transport, agriculture, and industrial projects. However, the efforts to foster development in resource-abundant countries will not automatically translate into stories of success. Many initiatives require refinement to better target investments and maximize their impact. Projects may generate limited returns, and companies may remain reluctant to assume the high risks of investing in less-developed economies.

The Mediterranean as a geopolitical laboratory 

Few regions illustrate the complexity of the Nexus more clearly than the Mediterranean, where climate stress intersects with geopolitical instability, trade dependence, migration pressures, and unequal economic development. Northern Mediterranean countries tend to maintain stronger export-oriented agricultural systems and more diversified energy infrastructures, while Southern and Eastern countries face deeper structural vulnerabilities. In Lebanon, for example, the economic and inflationary crises, trade disruptions, and climate-related pressures are undermining food security. The lesson extends well beyond Lebanon: resilience increasingly depends on the capacity to absorb compound shocks rather than isolated risks. Even local adaptation strategies reveal the complexity of systemic transformation. In Italy (Sicily), the expansion of tropical crops such as mangoes reflects agricultural adaptation to rising temperatures, while raising questions about the long-term effects of such an ecosystem transformation and its implications in terms of water and energy requirements.

The Mediterranean is a crucial energy hub between Europe, Africa, and the Middle East, and therefore a geopolitical laboratory for understanding the Nexus and its broad implications. Similar challenges are emerging in several other regions, spanning California, Chile, South Africa, and Australia—all regions where water scarcity, energy demand, and competing land uses call for a Nexus approach. 

From scarcity management to resilience strategy  

The global transition toward a low-carbon economy will not succeed if treated exclusively as an energy transition. It is equally a transition in water systems, food systems and ecosystem management. The WEF Nexus highlights a fundamental truth: resilience depends not only on securing individual resources, but on understanding the relationships among them.

For governments, this suggests redesigning policy frameworks around systemic interdependence. For investors, it suggests prioritizing infrastructure to improve resilience to climate, water and food security shocks. For businesses, it demands value chains capable of adapting to overlapping disruptions.

The Nexus perspective forces a shift in political imagination. Scarcity can no longer be addressed reactively, through fragmented emergency responses. Instead, resilience must become the organizing principle of development, investment and international cooperation.