The infrastructure logic of global health diplomacy: how cities become key nodes of the new order

Introduction

When China plants its flag at a Pakistani port or on a Kenyan railway, when the United States and the European Union announce a "Partnership for Global Infrastructure and Investment" to counter the Belt and Road Initiative, the world is entering a game played with reinforced concrete as chips. Infrastructure, once a domain led by engineers and urban planners, has now risen to become a convergence point of geopolitics, economic strategy, and global governance. Yet there is a widely overlooked dimension in this race—public health and urban governance. In fact, infrastructure is not only a conduit of power, but also the underlying code of human health and ecological resilience. In the 21st century, when urbanization has become the dominant form of human civilization, understanding the relationship between infrastructure, cities, and global health diplomacy has become key to grasping the future world order.

The Evolution of the Infrastructure Concept

The term infrastructure originated in late-19th-century railway engineering, used to distinguish the foundational soil and rock from the superstructure of tracks and stations. At that time, the state was responsible for the underlying works, while private enterprises built the upper structures. By the 1980s, the neoliberal turn gave rise to an "infrastructure fever," as governments began privatizing infrastructure in exchange for fiscal revenue. Today, the concept has expanded to include built assets, social systems, knowledge dissemination, and natural ecosystems. This expansion has sparked debate: some say "infrastructure is everywhere," while others argue that such a broad definition causes the issue to lose focus. But consensus remains: infrastructure is the basic framework that enables social, economic, and ecological systems to function.

Historically, Europe's railway systems have a lineage connected to the road networks of the Roman Empire; the operating principles of modern pharmaceutical supply chains bear considerable resemblance to the rice-cultivation and fishery-distribution systems that have persisted in Asia for thousands of years. This analogy suggests that the conceptual elasticity of infrastructure is not accidental, but rather reflects the continuation and restructuring of human modes of collaboration.

The Urban Century

Cities are the largest infrastructure that humanity has built. By 2014, according to United Nations statistics, the population living in cities had surpassed that of any other environment, marking the true arrival of the urban century. Cities concentrate interconnected systems and governance layers, including transportation, communication, knowledge innovation, and service delivery. At the same time, however, cities are fundamental stressors on natural systems. Urbanization has led to rapid changes in biodiversity, made infectious diseases more likely to cross borders, spread pollutants globally, and intensified climate warming. When the interdependence of urban infrastructure becomes so dense, the failure of any single link can trigger chain reactions that directly threaten human health.

Infrastructure and GeopoliticsThe rise of China's Belt and Road Initiative can be seen as a marker of infrastructure diplomacy entering a new phase. It was first designed to secure the global flow of resources to sustain China's economic and political power. The initiative covers extractive industries, transportation networks, communication systems, and also includes social facilities such as sports venues and cultural centers, but these are often just "supporting gifts" to strengthen the bargaining chips in major economic negotiations. Notably, health, human rights, and sustainability are not strategic objectives of the Belt and Road negotiations.

Historically, the Marshall Plan was a typical example of balancing great-power politics. After World War II, the United States provided large-scale reconstruction aid to European cities, thereby supporting the spread of liberal democratic culture, expanding markets for its own goods, and promoting the internationalization of the dollar. Compared with the Belt and Road Initiative, the Marshall Plan had a clear ideological element, whereas the Belt and Road Initiative lacks a similar value statement. But what the two share is this: neither prioritized human health and planetary well-being in infrastructure construction. The post-war "Marshall Plan for the Mind" attempted to fill that gap, yet it has always been overshadowed by government-led grand projects.

Facing China's Belt and Road Initiative, the United States and its G7 allies launched the Partnership for Global Infrastructure and Investment in 2022, followed by the India-Middle East-Europe Economic Corridor. These plans likewise use infrastructure as a tool, but to date, health and ecology are still not their core objectives.

City Networks and Health Diplomacy

At the nation-state level, infrastructure diplomacy often serves national interests, but cities are forging another path. Transnational city networks have begun to integrate the "One Health" principle into urban infrastructure planning. Through data sharing, joint experimentation, and standard-setting, these networks turn cities into new nodes of global health governance. The strength of city diplomacy lies in its flexibility—it can bypass political deadlocks between states and focus directly on residents' health needs. This model has shown enormous potential in addressing climate change, infectious disease early warning, and health inequality.

However, the efforts of city networks remain relatively marginal. They lack the resources and enforcement power that national governments command, and they are often overlooked amid great-power competition.

Structural Reflections

The current world system is undergoing a dual shift: first, the concept of infrastructure is moving from hardware to a systemic "everything"; second, world power is dispersing from states to cities, non-governmental organizations, and other actors. Under these two shifts, old geopolitical thinking—which treats infrastructure as a zero-sum bargaining chip—has become obsolete. The real long-term competition lies in who can more effectively integrate transportation, energy, health, and ecology, who can build more resilient city networks, and who can advance prosperity without sacrificing human health and the environment.

ConclusionInfrastructure is a mirror of the 21st-century international order. Countries and cities that can maintain cooperation amid competition and hold the line on health and sustainability under geopolitical pressure will define the global system for decades to come. As the largest infrastructure of all, cities are both epicenters of risk and starting points for recovery. The next phase of global health diplomacy may depend less on how many agreements major powers sign than on whether cities are willing to reimagine their concrete and steel and coexist in harmony with natural systems.