Industry analyses describe the simultaneous closure of the Red Sea and Strait of Hormuz to cable maintenance operations in 2026 as an unprecedented stress test for global telecommunications. For decades, engineers and policymakers treated submarine cable chokepoints as a theoretical vulnerability. The theory has now been tested, and the results are damning: an estimated 99% of international data traffic still relies on subsea cables, and repairs can slow or stop when conflicts restrict access to the narrow waterways where major routes converge.
The crisis did not emerge from a single attack or natural disaster. It accumulated through decades of decisions that prioritized cost efficiency over resilience, funneling the physical geography of the internet through the same geographic bottlenecks that constrain oil tankers and container ships. When conflict made both chokepoints harder to service simultaneously, the strategic failure of submarine cable redundancy became undeniable.
Submarine Cable Chokepoints: The Numbers Behind the Failure
As of April 2025, 597 subsea cables were in operation or under construction, carrying an estimated 99% of international data traffic[s]. These cables span more than 1.4 million kilometers across ocean floors[s]. Despite this vast network, traffic concentrates at a handful of geographic pinch points where cables must pass through narrow straits or cross limited stretches of coastline.
The concentration is most extreme at Egypt. Over 90 percent of Europe-Asia communications travel through Egyptian territory before entering subsea cable systems in the Red Sea[s]. No other telecom cable route in the world has condensed so many cables through similar successive bottlenecks, making it what one analysis calls “the internet’s most vulnerable place on Earth”[s].
The Red Sea corridor carries approximately 17 percent of global internet traffic[s]. Seventeen submarine cables facilitate this flow between Asia, Africa, and Europe[s]. When cables exit the Red Sea, they must pass through the Bab al-Mandab Strait, which narrows to only 26 kilometers at its tightest point. This geographic chokepoint functions identically to maritime chokepoints that constrain shipping, but for data rather than cargo.
How Chokepoints Captured Global Traffic
The world’s submarine cable infrastructure clusters around several primary corridors where geography or landing-site concentration forces convergence:
- Egypt/Red Sea/Bab al-Mandab: The dominant Europe-Asia route, carrying 17-18% of global traffic through successive narrowing passages.
- Strait of Hormuz/Persian Gulf: The secondary Middle East corridor, where war risks have halted new cable work and restricted repair access.
- Strait of Malacca: The Southeast Asian passage connecting Pacific and Indian Ocean cable systems.
- Suez Canal approaches: The Mediterranean entry point for cables crossing Egypt.
- UK/France transatlantic landing sites: Major Western European landing clusters on the transatlantic route.
- New York/New Jersey landing sites: A major American landing cluster for Atlantic cables.
These submarine cable chokepoints emerged not from engineering necessity but from economic logic. Laying cables through the shortest possible routes minimized construction costs. Landing them at established telecommunications hubs reduced permitting complexity. Each incremental decision was rational in isolation, but the cumulative effect created structural brittleness. The pattern mirrors the maritime infrastructure fragility that became visible during the 2021 Suez Canal blockage, when a single grounded ship halted $60 billion in trade over six days.
The Redundancy Illusion
Industry marketing frequently emphasizes redundancy. Multiple cables serve each major route. Traffic can theoretically reroute when individual cables fail. This claim dissolves under scrutiny.
Many routes described as “diverse” are only different on paper. In reality, they often share the same physical paths[s]. Cables that appear geographically separate converge at the same landing stations, cross the same territorial waters, and depend on the same repair infrastructure. In February 2024, a Houthi missile strike on a UK-owned vessel in the Red Sea led to anchor damage that severed three major cables, disrupting 25 percent of telecommunications traffic between Asia, Europe, and the Middle East[s].
True redundancy requires equal capacity on physically separated alternate routes, supplier diversity, and independent repair capability[s]. Few operators invest equally in primary versus backup paths because building equivalent redundancy across multiple corridors is expensive. The result is a gap between resilience marketing and engineering reality.
Three Structural Failures
A Recorded Future threat analysis identified three factors that make submarine cable chokepoints vulnerable to prolonged outages: lack of redundancy in cable networks, lack of diversity of cable routes, and limited global repair capacity[s]. Each factor compounds the others.
Only 63 cable ships operate globally[s]. These highly specialized vessels represent the entire capacity for repair, maintenance, and new cable installation worldwide. The fleet is aging, and estimates suggest that maintaining it at current size will require hundreds of millions in capital expenditure over the next decade. Without significant expansion of dedicated repair vessels, repair capacity is likely to lag behind demand, pushing median restoration times beyond the current 40-day benchmark[s].
Repairs cost between $1 and $3 million per incident and require territorial water access rights that can take weeks to negotiate[s]. Previous Red Sea cable faults took as long as six months to repair[s]. When active conflict closes a region entirely, repair vessels cannot operate at all. As industry experts noted, sending vessels into an active war zone is simply “too risky”[s].
The 2026 Dual Maintenance Closure
The Iran conflict created a second major maintenance chokepoint in the Strait of Hormuz and Persian Gulf, compounding the existing crisis in the Red Sea[s]. This simultaneous closure represents an unprecedented stress test for the global internet[s].
The conflict has exposed tech infrastructure to acute threats, with Iranian drones striking data centers in Bahrain and the UAE. Iran has threatened to sever undersea cables and mine the Strait of Hormuz[s]. War risks have already halted work on new undersea cables in the Persian Gulf, mirroring the situation in the Red Sea where Houthi attacks have delayed all undersea cable construction since 2024[s].
The convergence of maritime and digital vulnerability reflects how IRGC maritime leverage extends beyond oil shipping to encompass data flows. Cable repair ships already deployed to fix cuts that occurred in late 2025 have been forced to suspend operations indefinitely[s]. Any cables damaged during the conflict may remain severed for its duration.
Ownership Concentration Compounds Geographic Concentration
The vulnerability of submarine cable chokepoints extends beyond geography. Four companies, Google, Meta, Microsoft, and Amazon, now collectively control around 90% of capacity on the transatlantic route and about 71% of global subsea fibre capacity[s].
This concentration is recent. The oldest 91 cable systems, largely carrying public telecom traffic, account for just 2% of total capacity, while 74% is concentrated in the newest 31 systems[s]. As hyperscalers increasingly pursue sole-ownership models for new high-capacity cables, public authorities have diminishing influence over capacity management and allocation.
The trend intersects with surging demand. International bandwidth used by major cloud, AI, and social media content providers will rise ninefold between 2025 and 2035[s]. This growth feeds an AI supply chain that depends on uninterrupted connectivity between data centers, annotation workforces, and end users across continents. Disruptions to submarine cable chokepoints ripple through cloud services, financial systems, and enterprise operations that have become dependent on low-latency intercontinental links.
Financial services, cloud-based enterprise operations, and travel-related platforms face the greatest exposure to latency, synchronization issues, and restoration delays[s].
Grey-Zone Tactics and the New Threat Environment
The risk environment for submarine cable chokepoints has shifted beyond accidents and natural disasters. Grey-zone tactics below the level of formal conflict are extremely challenging to attribute. States engage commercial or research ships in contact with cables while keeping operations secret[s].
Recorded Future identified 44 publicly reported cable damages in 2024 and 2025 occurring in 32 distinct groupings. Unknown causes accounted for the largest share (31%), followed by anchor dragging (25%)[s]. Four incidents in the Baltic Sea and around Taiwan involved Russia- or China-linked vessels operating under suspicious circumstances or with opaque ownership structures[s].
The chokepoints themselves serve as major risk concentration points, enabling sophisticated actors to perform intelligence operations at massive scale[s]. In September 2025, the US House of Representatives passed legislation to tighten American control over critical fiber optic undersea cable equipment, attempting to prevent rivals from acquiring cable technologies[s].
Geopolitical fragmentation is likely to undermine the system’s core resilience, which has long derived from interdependence: route diversity, reciprocal restoration, and an interlinking architecture that cushions shocks[s]. When networks are segmented into “ours” and “theirs,” the mutual deterrence benefits disappear.
The Search for Alternatives
The crisis has accelerated interest in routes that bypass Middle Eastern submarine cable chokepoints entirely. Meta’s Project Waterworth, a 50,000-kilometer cable connecting the US, Brazil, South Africa, India, Malaysia, and Australia, explicitly avoids the region[s]. The Polar Connect initiative, an Arctic submarine cable linking Europe, North America, and East Asia, has been designated a Cable Project of European Interest and received additional EU funding[s].
Terrestrial alternatives through Saudi Arabia, Iraq, and Turkey have gained renewed attention. Saudi Arabia’s stc Group is investing $800 million in SilkLink, a fiber optic network through Syria[s]. Qatar’s Ooredoo is pursuing a $500 million cable corridor from the Gulf of Oman through Iraq and Turkey to France[s].
These alternatives carry their own risks. Terrestrial routes cross multiple international borders, each with distinct regulatory requirements, law enforcement access demands, and digital sovereignty rules. Construction costs run higher than subsea deployment, and cables face greater maintenance risks from human activity on land. Low-earth orbit satellite services like Starlink offer backup for individual users but cannot match aggregate cable capacity or scale to serve entire cities[s].
None of these alternatives will come online quickly. The Arctic route is scheduled for approximately 2030. Major subsea projects take years from planning to operation. In the interim, the global internet depends on infrastructure facing serious repair constraints in two critical corridors.
What Comes Next
The failure of submarine cable chokepoint redundancy was predictable and predicted. Engineers have warned for years that route concentration created systemic vulnerability. Cost pressures and the absence of regulatory mandates for true diversity allowed the problem to compound.
The current crisis will likely accelerate three shifts. First, hyperscalers will increasingly build private cables that avoid contested waters entirely, fragmenting the formerly shared infrastructure into corporate-controlled networks. Second, states will treat cables more explicitly as strategic assets, with implications for ownership restrictions, landing site security, and repair vessel availability. Third, the economics of resilience will shift: routes once dismissed as too expensive may become necessary hedges against geopolitical disruption.
For businesses dependent on Europe-Asia connectivity, the immediate outlook involves degraded performance, routing complexity, and exposure to latency during rerouting periods. The most likely near-term outcome is not region-wide communications failure but sustained repair delays, heavier traffic rerouting, and greater vulnerability to cascading disruptions.
The submarine cable chokepoints that carry the world’s internet traffic represent decades of accumulated decisions. Reversing that concentration will take comparable time and investment. The 2026 crisis proved the vulnerability was real. Whether it produces lasting structural change or merely a return to business as usual once the fighting stops remains to be seen.
