While the world watches trade disputes and armed conflicts, a silent revolution is unfolding at the bottom of the ocean. Submarine fiber-optic cables, which carry more than 95 percent of international data traffic, have become the new axis of global geopolitics. In 2026, the race to expand and control these digital routes pits technological powers, private companies, and governments against each other on a board where connectivity equals influence.
More than 95% of the world's data traffic travels through submarine cables, according to industry figures. Controlling them means controlling the global economy.
The invisible map of the digital economy
From the Strait of Malacca to the North Atlantic, submarine cables form an invisible network that supports everything from bank transactions to video calls. But in recent years, these digital corridors have gone from mere technical infrastructure to strategic assets. Companies like Google, Meta, and Amazon have invested billions in their own projects, while countries like China and Russia seek to expand their presence in key regions such as the Pacific and the Arctic.
The new digital silk road is not just about laying fiber: it includes data centers, landing stations, and technical cooperation agreements. In Latin America, for example, projects like the cable that will connect Brazil to Europe aim to reduce dependence on routes that pass through the United States. In Africa, the 2Africa cable, promoted by Meta, promises to connect the continent to Europe and Asia, which could transform the local economy and internet access.
What is a submarine cable?
It is a fiber-optic cable laid on the seabed to transmit data at high speed between continents. Despite its name, they are not simple wires: they span tens of thousands of kilometers and require constant maintenance, as they are vulnerable to ship anchors, earthquakes, and even deliberate attacks.
Risks and vulnerabilities: when the cable becomes a weapon
The concentration of digital infrastructure also introduces new risks. A single damaged cable can leave an entire country without internet, and governments know it. In 2025, several incidents in the Red Sea and the Baltic raised alarms about possible sabotage. Although no direct attack was confirmed, NATO and the European Union have created working groups to protect these vital routes, while insurance companies have begun offering specific policies against disruptions.
State response has not been slow. The United States, Australia, and Japan have launched joint initiatives to fund cables in the South Pacific, directly competing with Chinese plans. Europe, for its part, is promoting the 'EuroAsia Interconnector' project to connect the Baltic countries to the European network, reducing their dependence on connections with Russia. Digital infrastructure has become a matter of national security.
The impact on the economy and daily life
Beyond geopolitics, these digital routes have concrete effects on people's lives. The expansion of submarine cables lowers internet costs and improves speed in regions that were previously marginalized. In sub-Saharan Africa, for example, new cables have allowed mobile data prices to drop by an average of 30 percent over the past five years, boosting e-commerce and mobile banking.
Artificial intelligence is also linked to this infrastructure: language models and cloud services depend on data centers interconnected by submarine cables. Without these routes, access to AI tools would be impossible on a global scale. Thus, the competition to dominate digital infrastructure becomes, indirectly, a competition to lead AI.
What does this mean for the world?
The new digital silk road is redefining alliances and rivalries in the 21st century. Countries that control cables, data centers, and associated technologies will have a huge strategic advantage in the global economy and security. But it also raises questions about digital sovereignty, privacy, and equity in access to connectivity. Geopolitics is no longer played only on terrestrial maps: it is also decided at the bottom of the ocean.