The world's digital economy depends on infrastructure most people never see. Beneath the oceans, fibre optic cables carry messages, financial transactions, cloud computing traffic, business communications and the data that connects billions of people. These cables are not a supporting detail of the internet. They are its physical backbone.
One of the most strategically important routes passes through the Red Sea and the narrow Bab al Mandab Strait, linking the Mediterranean and Europe with the Middle East, South Asia and parts of East Asia. Regional conflict has made this route a focus of growing concern. Damage to a cable does not automatically switch off the internet for an entire country, but it can force traffic onto other routes, increase latency, reduce capacity and raise the risk of wider disruption when several systems share the same geography.
The strategic question is bigger than whether a cable might be cut. It is whether the international digital system has enough alternative routes, repair capacity and political cooperation to remain reliable when a key maritime corridor becomes dangerous. This investigation examines how undersea cables work, why the Red Sea matters, how conflict and accidents can affect digital services, and what the risks mean for Pakistan. It distinguishes confirmed facts from allegations and explains why resilience, not panic, is the right response.
Facts at a Glance
- Global dependence: The International Telecommunication Union says submarine telecommunication cables carry more than 99 per cent of worldwide data traffic.
- Strategic corridor: The Red Sea route is a major connection between Europe and Asia, with multiple cable systems passing through or near the same maritime region.
- Two distinct risks: Many cable faults worldwide are associated with accidental human activity and natural hazards, but conflict can complicate access, repairs and security.
- Repair challenge: A damaged cable may require a specialist vessel, suitable weather, permits, spare cable and safe access to the repair area.
- Pakistan's exposure: Pakistan relies on international submarine cable connections for global internet capacity, so route diversity and backup arrangements matter to businesses and households.
- Policy priority: More independent routes, transparent incident reporting, faster repair permissions and cooperation between operators and governments can reduce risk.
1. The Internet Is Physical Infrastructure
The word internet can suggest something weightless, instant and detached from geography. In reality, international connectivity depends on a large physical system: fibre optic cables, landing stations, terrestrial networks, data centres, routers, electricity supplies and the companies that maintain them.
Submarine cables use pulses of light to transmit data through optical fibres. They connect landing stations on different shores and link into terrestrial networks that carry information onward to homes, offices, mobile networks and cloud facilities. The system is designed for enormous capacity and low delay over long distances. Satellites remain important for remote coverage, emergency communications and specialised uses, but they do not replace the capacity and economics of fibre cables for the bulk of international traffic.
The International Telecommunication Union, the United Nations agency for digital technologies, says submarine cables carry more than 99 per cent of worldwide data traffic. That figure is a reminder that the digital economy has a physical geography. A video call, a bank transfer, an online order or a cloud application may depend on several networks and cable systems even when the user has no idea where the data travels.
This dependence is especially important as artificial intelligence, streaming, cloud computing, online finance and cross border commerce expand. Greater demand makes connectivity more valuable, while the concentration of cables along a limited number of corridors can create shared vulnerabilities.
2. How Undersea Cables Work
A submarine communications cable is not simply a long internet wire. It is an engineered system designed to withstand the seabed environment and transmit data over thousands of kilometres. The optical fibres at its centre carry information as light. Protective layers vary according to whether the cable is laid in shallow water, where anchors and fishing gear are more likely to cause damage, or in deeper water, where different forms of protection are used.
Along long routes, submerged repeaters amplify or regenerate optical signals so that they can travel across ocean basins. At the shore, the cable reaches a landing station, where equipment connects the submarine system to land based networks. From there, traffic may travel through national fibre networks, data centres and international terrestrial links.
Modern cables are generally built and operated by consortia of telecommunications companies, infrastructure investors and technology firms. A single cable may have multiple owners, landing points and capacity agreements. The commercial structure matters because ownership, maintenance obligations and the right to use capacity are not always the same thing.
Several cables may run through a similar corridor because the route offers a practical connection between major markets. That creates efficiency, but it can also create correlated risk: separate cable systems can be affected by the same conflict zone, maritime incident or restricted repair area. True resilience requires not only multiple cables, but routes that are sufficiently geographically independent.
3. Why the Red Sea and Bab al Mandab Matter
The Red Sea is a bridge between the Mediterranean region and the Indian Ocean. At its southern end, the Bab al Mandab Strait connects the Red Sea to the Gulf of Aden. Cable systems using this broad corridor help connect Europe with the Middle East, South Asia and destinations farther east. On the northern side, routes connect onward through Egypt and the Mediterranean; on the southern and eastern sides, systems connect to the Gulf, the Arabian Sea and Asian networks.
This geography makes the Red Sea important to shipping and digital communications alike. A vessel carrying goods and a cable carrying data serve different purposes, but both depend on safe passage through a narrow maritime environment. When conflict raises the risk to ships, it can also affect cable installation, inspection and repair operations. The concern is not that every cable is exposed in the same way, but that many international connections pass through a region where safe access cannot be taken for granted.
On 13 October 2026, Al Jazeera reported renewed concern about regional digital infrastructure following threats against cables and data centres and fighting around Bab al Mandab. It also reported that more than 90 per cent of data capacity between Europe and Asia passes through cables under the Red Sea, attributing that estimate to research firm TeleGeography. Treat this as a route estimate, not a claim that all internet traffic worldwide travels through one strait.
The wider lesson is that a region can become a digital chokepoint without owning the data or the companies that generate it. Geography gives the area strategic importance because networks have to cross oceans somewhere. The location of cables, landing stations and terrestrial links can influence how quickly traffic can be rerouted and how costly a disruption becomes.
4. Conflict, Sabotage and Accidental Damage
Undersea cable risks should be discussed carefully. Cable faults occur around the world, and many result from anchors, fishing activity, seabed movement or other accidental causes. A damaged cable is not proof of sabotage. Determining responsibility requires evidence, technical inspection and, where relevant, a credible investigation.
Conflict increases risk in several ways. A cable can be damaged accidentally by vessels operating in dangerous conditions. Operators may be unable to send repair ships into a contested area. Authorities may restrict access for security reasons. Insurance and crew safety concerns can delay work. Even if the cable itself remains intact, attacks or outages affecting power, landing stations, terrestrial backhaul or data centres can disrupt digital services.
There is also a distinction between capability, threat and confirmed action. A government or armed group may threaten infrastructure, but a threat does not establish that an attack has occurred. Likewise, a cable failure in a politically sensitive region does not by itself establish who caused it. Responsible reporting should identify what is known, who is making a claim, and what remains unverified.
Submarine cable infrastructure is difficult to guard continuously across vast distances. Protection therefore depends on a combination of route diversity, monitoring, maritime awareness, legal frameworks, rapid fault detection, repair agreements and cooperation between private operators and public authorities. No single navy, regulator or company can eliminate every risk.
5. What Happens When a Cable Breaks?
A cable fault does not always cause a nationwide internet blackout. The impact depends on how many systems are affected, how much spare capacity is available, whether traffic can be rerouted, where the fault occurs and how networks are engineered. If a provider has several independent international routes, its customers may notice little more than a change in latency. If the remaining routes are congested or limited, users may experience slower downloads, unstable video calls, interrupted services or delays connecting to overseas platforms.
Businesses can be affected even when ordinary browsing continues. Financial institutions need reliable connections to international payment and trading systems. Airlines and logistics firms depend on data exchange across borders. Cloud services may rely on multiple regions and network providers. Media companies, exporters, software firms and call centres can lose productivity when international links become unreliable.
There may also be indirect effects. A cable fault can prompt operators to reroute traffic, changing network congestion patterns. A separate fault on an alternative route can then have a larger impact than it otherwise would. The most serious risk is therefore not always one cable breaking; it is several systems being exposed to a common hazard while backup capacity is inadequate.
Digital infrastructure is interconnected, but it is not one single wire. Traffic can use other submarine systems, terrestrial fibre corridors and, in some cases, satellite links. The amount of practical redundancy varies by country, operator, service and destination. Claims that a single cable incident will automatically disconnect an entire nation should be treated with caution unless supported by technical evidence.
6. Why Repairs Can Take So Long
Repairing a submarine cable is a specialised maritime operation. Operators first locate and diagnose the fault, then coordinate a repair vessel, crew, equipment, spare cable and permissions. The ship must reach the site safely, recover the damaged section or otherwise access it, complete the repair and test the system. Weather, sea conditions, depth, the type of fault and the availability of a suitable vessel all affect the timeline.
Conflict can make each step more complicated. A repair vessel may need security assurances or permission from multiple authorities. Crews may not be allowed to work in a contested zone. War risk insurance may be expensive or unavailable. If a route crosses several jurisdictions, permits and diplomatic coordination can become as important as the engineering itself.
Repair delays have consequences beyond the cable owner. Network operators may need to buy temporary capacity, reroute customers or manage congestion. Governments may face pressure to explain service disruptions even when the fault lies outside their territory. Businesses that rely on low latency or guaranteed connectivity may need to activate contingency plans.
The ITU's 2026 work on cable resilience highlights repair delays, geographic concentration, physical risks and dependence on a small number of cable systems as major challenges. Its recommendations include stronger coordination between governments and industry, faster permitting, better risk identification, route diversity and improved preparedness.
7. Can Traffic Avoid the Red Sea?
Yes, some traffic can be rerouted, but alternatives are not unlimited and are not always equivalent. Operators can use other submarine cables, terrestrial fibre routes across land, or capacity purchased from other networks. Whether an alternative works depends on the source and destination of traffic, available capacity, commercial agreements, technical compatibility and the condition of the route itself.
Alternative land corridors can reduce dependence on a maritime chokepoint. In October 2026, Al Jazeera reported on an Iraqi route initiative intended to carry data from the Gulf across Iraq toward Türkiye, alongside reports that some technology traffic was being shifted through the country. Such routes can add useful diversity, but they require investment, cross border coordination, reliable power, secure terrestrial infrastructure and sufficient capacity. A route announced or under construction should not be described as a fully operational substitute until that status is confirmed.
Routes around Africa or through other parts of Asia can provide additional options, but they may be longer, more expensive or dependent on different landing stations and networks. A path that is technically possible may not have enough capacity to absorb a large diversion at peak times. Nor does a new route guarantee resilience if it shares the same landing station, terrestrial bottleneck or political risk with an existing system.
Satellite communications can support emergency connectivity and reach remote locations, but they cannot economically replace the immense capacity of submarine fibre systems for the bulk of global internet traffic. The practical strategy is a diverse portfolio: multiple submarine routes, resilient terrestrial links, distributed data infrastructure, emergency satellite capacity and well tested rerouting procedures.
8. Who Owns and Controls the Cables?
Ownership is distributed. Traditional submarine cable systems were often developed by telecommunications consortia, while large cloud and technology companies have become increasingly important investors in international capacity. Operators may own the physical cable, own a share of a consortium, lease wavelengths or purchase capacity from another company. These arrangements influence who pays for maintenance, who controls capacity allocation and how quickly a network can expand.
Governments have a different set of responsibilities. They issue landing permits, regulate telecommunications, protect territorial waters and critical infrastructure, manage national security concerns and cooperate with other states when cables cross international waters. Governments may also invest in connectivity or encourage private investment to improve national resilience.
This public private relationship creates a policy challenge. Cables are often privately owned, but a disruption can affect public services, national security and economic activity. Operators need commercially viable investments, while governments need transparent risk assessments and confidence that essential services can continue during an emergency.
Control of the cable is not the same as control of all data that travels through it. Data can be encrypted, routed through multiple networks and handled by service providers in different jurisdictions. Nevertheless, physical routes, landing stations and network interconnection points have strategic significance. A country with only a few international gateways may have fewer choices during a crisis than one connected through several independent systems.
9. What This Means for Pakistan
Pakistan's international internet connectivity depends in part on submarine cable systems landing on its coast and linking domestic networks to global routes. This makes cable resilience a practical economic issue, not an abstract geopolitical debate. A disruption can affect digital services, overseas communication, e commerce, software exports, cloud access and the reliability of services used by households and businesses.
A Government of Pakistan press release dated 22 November 2025 reported deployment of the SEA-ME-WE 6 submarine cable system, a 19,200 kilometre network linking countries between Singapore and France. The release said Pakistan had been allocated 13.2 terabits per second of capacity, with 4 terabits per second to be activated immediately. These figures describe the announcement at that time and should not be mistaken for a current measurement of total national capacity.
Pakistan has also experienced domestic concern about international cable faults. In July 2026, the Pakistan Telecommunication Authority was reported to have said that service returned to normal after a fault affecting the SEA-ME-WE 5 system was resolved. That incident illustrates how a fault on an international route can be felt by users far from the actual break, even when operators reroute traffic and eventually restore service.
The key question for Pakistan is not simply how many cables are connected to the country. It is how independent those routes are, how much spare capacity is available, how quickly operators can shift traffic, and whether domestic fibre links can move traffic from landing stations to major cities without creating new bottlenecks.
Pakistan should also treat digital resilience as an export and investment issue. Software development, business process outsourcing, fintech, online education and cloud based services all depend on predictable connectivity. International customers may judge a provider not only on price and skill, but also on its ability to maintain service during outages. A more resilient network can support economic diversification and make Pakistan a more dependable digital partner.
Public policy should avoid alarmist claims that the internet will inevitably collapse because of conflict near the Red Sea. A more useful approach is to publish clear information about capacity, independent routes, redundancy, restoration plans and the responsibilities of network operators. When incidents occur, timely factual communication helps businesses plan and reduces misinformation.
Table 1: Digital Cable Risks and Their Possible Effects
| Risk | How it can occur | Possible impact | Practical mitigation |
|---|---|---|---|
| Anchor or fishing damage | Vessel equipment interacts with a cable in vulnerable waters | Local capacity loss, rerouting and repair costs | Cable charting, awareness, burial where suitable and rapid repair plans |
| Conflict zone access | Security conditions prevent repair vessels from reaching a fault | Longer outage and expensive temporary capacity | Pre-agreed permissions, safety coordination and alternative routes |
| Multiple cables in one corridor | Several systems share a narrow maritime passage | Correlated failures can overwhelm backups | Geographically diverse routes and landing points |
| Landing station or power outage | A shore facility loses power, access or backhaul | Connectivity problems despite an intact cable | Backup power, secure facilities and diverse terrestrial links |
| Insufficient spare capacity | Backup routes cannot absorb diverted traffic | Congestion, latency and service degradation | Capacity planning, tested rerouting and more independent systems |
10. How to Make the Network More Resilient
Build genuine route diversity
Several cables do not necessarily provide several independent routes. If they pass through the same narrow strait, land at the same station or depend on one terrestrial corridor, they can share a common point of failure. Governments and operators should assess geographic diversity from end to end, including landing stations, power, backhaul and interconnection facilities.
Make repairs faster and safer
Repair ships are scarce specialist resources. Governments can help by establishing clear emergency procedures, speeding up permits where appropriate, sharing navigational information and coordinating safe access. Operators should maintain spare parts, contracts and contingency plans before a crisis occurs, rather than negotiating every step after a cable has failed.
Improve monitoring and incident transparency
Network operators use monitoring systems to detect faults and reroute traffic. Better coordination can help identify whether multiple failures share a cause and where spare capacity is needed. Public reporting should be prompt but careful: it should explain service impacts without disclosing sensitive details that could create new vulnerabilities or presenting speculation as fact.
Protect shore infrastructure
Landing stations, power supplies, terrestrial backhaul and data centres are part of the same digital system. Protecting the cable offshore while leaving a single shore facility exposed would be an incomplete strategy. Physical security, backup power, cyber security, staff readiness and redundant land routes all contribute to continuity.
Coordinate across borders
International cable systems cross national jurisdictions and are often maintained by multinational consortia. No country can secure every segment alone. Governments, regulators, cable owners, maritime agencies and repair operators need procedures for exchanging information, responding to incidents and granting emergency access. The ITU and the International Cable Protection Committee provide forums for international cooperation and technical guidance.
Test emergency plans
A written contingency plan is useful only if it works. Operators should periodically test traffic rerouting, failover capacity, customer communications and coordination with public authorities. Governments can encourage realistic exercises that simulate simultaneous faults or loss of a major landing station. The goal is to identify bottlenecks before they are exposed by a real incident.
11. Three Possible Futures
Scenario One: Managed instability
Regional security remains tense, but most cable systems continue operating. Operators increase monitoring, invest in spare capacity and develop additional land corridors. Occasional faults cause local disruption, yet traffic rerouting and timely repairs prevent a prolonged regional crisis. This outcome depends on continued investment and practical cooperation even when political relations remain strained.
Scenario Two: A prolonged repair crisis
A serious cable fault occurs in an area where security restrictions prevent repair vessels from working quickly. Other routes remain available but lack enough spare capacity, producing congestion and higher costs. Digital services are not necessarily cut off, but some businesses and users experience slower or less reliable connections. The episode reveals that nominal route diversity was not matched by enough independent capacity.
Scenario Three: A broader infrastructure emergency
Several cable systems or associated shore facilities are disrupted during a wider regional confrontation. Repair access becomes difficult, data centres face separate power or security problems, and operators struggle to coordinate capacity across borders. This is the most damaging scenario, but it should not be presented as inevitable. It demonstrates why emergency planning, independent routes and international cooperation must be built before a crisis.
These scenarios are analytical possibilities, not predictions. The actual outcome would depend on the location and number of faults, network design, spare capacity, repair access and the duration of any conflict.
Table 2: A Practical Digital Resilience Agenda for Pakistan
| Priority | Recommended action | Why it matters |
|---|---|---|
| Route mapping | Assess cable, landing station and terrestrial backhaul dependencies | Identifies shared points of failure |
| Capacity reserves | Ensure backup routes can carry essential traffic during a fault | Reduces congestion and service degradation |
| Repair readiness | Maintain clear escalation procedures and coordinate with cable operators | Can shorten restoration time |
| Public communication | Publish verified incident updates and practical service guidance | Reduces rumours and helps businesses plan |
| Digital economy | Make reliable international connectivity part of export and investment policy | Supports software, fintech, outsourcing and cloud services |
| Regional cooperation | Explore diverse routes and emergency coordination with partners | Avoids overdependence on a single corridor |
Key Takeaways
- Submarine fibre optic cables carry more than 99 per cent of worldwide data traffic, making them essential infrastructure for finance, commerce and communication.
- The Red Sea and Bab al Mandab form a strategic digital corridor connecting Europe with the Middle East and Asia.
- Many cable faults are accidental; a fault alone does not prove sabotage or identify a responsible actor.
- Conflict can increase risk and delay repairs even when a cable has not been directly attacked.
- Backup capacity is only effective when routes are geographically independent and can absorb diverted traffic.
- Pakistan's digital economy benefits from more cable capacity, diverse routes, resilient domestic backhaul and clear incident communication.
- The best response is preparedness: route diversity, repair readiness, infrastructure protection and international cooperation.
Conclusion: The World Must Protect the Infrastructure It Cannot See
The global internet may appear to exist in the cloud, but much of its international traffic travels through cables resting on the seabed. Those cables support everything from family video calls to financial markets, digital exports and government communications. Their importance becomes visible when a fault interrupts the normal flow of data.
The Red Sea's position between Europe and Asia makes it a vital corridor, but also exposes the digital system to the consequences of regional instability. The lesson is not that a single incident will inevitably bring down the internet. It is that a highly connected world needs alternatives that are genuinely independent, enough capacity to reroute traffic, and repair arrangements that can operate even during difficult conditions.
For Pakistan, this is a question of economic resilience as much as national security. Reliable international connectivity supports technology exports, investment, education, commerce and everyday communication. Expanding capacity is important, but so is understanding where routes converge, how quickly faults can be repaired and how service providers will respond when several systems face pressure at once.
The next phase of digital security will not be decided only in data centres, technology headquarters or cyberspace. It will also depend on ships, landing stations, fibre routes and the ability of countries to cooperate across borders. Protecting the internet beneath the ocean is now part of protecting the global economy above it.
Frequently Asked Questions
1. What are undersea internet cables?
They are fibre optic cables laid on the seabed that transmit data between countries and continents. They connect to landing stations on shore and then to terrestrial networks, data centres and internet service providers.
2. How much of the world's internet traffic uses submarine cables?
The International Telecommunication Union says submarine telecommunication cables carry more than 99 per cent of worldwide data traffic. Satellite networks remain important for specific services, but they do not replace submarine fibre capacity at global scale.
3. Why is the Red Sea important for the internet?
The Red Sea and Bab al Mandab form a major route linking Europe with the Middle East and Asia. Multiple cable systems use this broad corridor, so regional instability can affect connectivity, rerouting and repair operations.
4. Have the Houthis or Iran been proven to cut undersea internet cables?
Claims must be evaluated incident by incident. Cable damage in a conflict zone does not by itself prove who caused it. Reporting should distinguish threats, allegations, technical assessments and confirmed findings. This article does not attribute a specific cable fault to an actor without verified evidence.
5. Would a cable cut shut down the internet in Pakistan?
Not necessarily. The impact depends on which system fails, how much backup capacity is available and whether traffic can be rerouted through other routes. Users may experience slower service or disruptions, but a single cable fault does not automatically mean a nationwide blackout.
6. Can satellites replace undersea cables?
Satellites can provide useful backup and reach remote areas, but they cannot economically carry the bulk of international internet traffic at the scale and capacity offered by submarine fibre systems. Resilience requires several complementary technologies.
7. How long does it take to repair a submarine cable?
There is no single timetable. Repair time depends on the fault, distance, water depth, weather, availability of a specialist vessel, spare parts, permits and security conditions. Conflict can make access and repair substantially more difficult.
8. What should Pakistan do to protect its digital connectivity?
Pakistan should strengthen geographically diverse routes, ensure adequate spare capacity, protect landing stations and terrestrial backhaul, coordinate repair procedures with operators, test rerouting plans and provide clear verified updates during outages.
9. Who owns submarine cables?
Many systems are owned by consortia of telecommunications companies, infrastructure firms and technology companies. Ownership, maintenance responsibility and the right to use capacity can be divided among different organisations.
10. Are undersea cables vulnerable to cyberattacks?
The cable itself is primarily physical transmission infrastructure, but the wider system includes network equipment, landing stations, management systems and connected terrestrial networks. Security therefore requires both physical protection and cyber security, alongside redundancy and recovery planning.
Sources and Further Reading
The following sources provide background, technical guidance and reporting used in this article. Consult the original documents for updates and additional detail.
- International Telecommunication Union, “International Advisory Body approves landmark report to strengthen submarine cable resilience,” 10 July 2026.
- International Telecommunication Union, Submarine Cable Resilience backgrounder.
- ITU, “The world is coming together to strengthen submarine cable resilience,” 2 February 2026.
- Al Jazeera, “Iran threatens Gulf data centres: How exposed is the region’s internet?”, 13 October 2026.
- Reuters, “The Hormuz digital chokepoint: How does the Iran war threaten subsea cables?”, 28 April 2026.
- Government of Pakistan Press Information Department, SEA-ME-WE 6 submarine cable deployment announcement, 22 November 2025.
- Dawn, “PTA says submarine cable fault resolved, internet services back to normal,” 3 July 2026.
- United States Maritime Administration, advisory for the Red Sea, Bab al Mandab Strait and Gulf of Aden.
Related WorldAtNet Reading
- WorldAtNet homepage — explore more international analysis and explainers.
Editorial note: Conflict reporting and cable status can change quickly. Before publication, verify the latest developments, confirm current figures against original sources, and update any claims that have changed. This article distinguishes reported threats from confirmed attacks and does not treat unverified allegations as established fact.
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