3 Growing vulnerability of Undersea Cables

Political & Constitutional Dimensions:

The Iranian proposal represents a significant challenge to the existing international order governing submarine cables. Under the United Nations Convention on the Law of the Sea (UNCLOS), submarine cables enjoy protected status in international waters, with coastal states having limited jurisdiction beyond territorial seas. The IRGC's proposal effectively seeks to impose extraterritorial regulatory authority over a critical global commons resource.

From India's perspective, this development has direct implications for its strategic autonomy. India maintains significant undersea cable landing stations at Mumbai, Chennai, and Kochi, connecting to international networks. Any disruption to cable traffic through chokepoints like the Strait of Hormuz would affect India's digital sovereignty and its ability to maintain independent communications infrastructure.

The proposal also raises questions about the application of international humanitarian law and the Tallinn Manual principles to critical infrastructure protection. While the Tallinn Manual addresses cyber operations, its application to physical infrastructure disruption remains contested.

Economic & Financial Impact:

The economic stakes of undersea cable disruption are enormous. Global digital commerce, valued at trillions of dollars annually, depends on cable infrastructure. The proposed IRGC "protection" payments would effectively constitute a digital toll, potentially increasing costs for all data traffic transiting through the region.

For India's financial sector specifically, the implications are severe. High-frequency trading systems require low-latency connectivity, with delays measured in milliseconds affecting market positions. A cable disruption affecting the Mumbai financial hub could paralyze stock trading and banking systems within minutes, as highlighted in the source material.

The IT-BPM sector, contributing approximately $250 billion to India's GDP and employing over 5 million people, relies on real-time global connectivity. Any degradation in international bandwidth would directly impact service delivery to international clients, potentially triggering contract penalties and reputation damage.

Social Dimensions:

The vulnerability of undersea cables creates significant equity concerns. Disruptions would disproportionately affect developing nations with limited alternative connectivity options. While developed economies might have redundant satellite or terrestrial backup systems, countries like India with rapidly growing digital economies have less redundancy.

The digital divide could widen if cable disruptions lead to service degradation or cost increases. Smaller nations dependent on single cable routes would face greater vulnerability than those with diverse landing points.

Governance & Administrative Aspects:

The governance challenge centers on the absence of a comprehensive international regulatory framework specifically addressing submarine cable protection. While ITU coordinates technical standards and UNCLOS provides general maritime jurisdiction principles, no dedicated treaty regime exists for cable protection in peacetime.

India's response options include:

• Diversification of cable landing points to reduce chokepoint dependency
• Investment in satellite backup systems (though less efficient)
• Bilateral engagement with Gulf states for alternative routes through the Red Sea
• Strengthening domestic cable manufacturing and laying capabilities

The federal structure implications are limited since cable landing stations fall under central government jurisdiction for foreign affairs and communications.

International Perspective:

Globally, several initiatives address critical infrastructure protection:

• The Budapest Convention (2001) addresses cybercrime but not physical infrastructure
• UNGA resolutions have emphasized critical infrastructure protection
• NATO has incorporated undersea cable protection into its deterrence framework

The Baltic Sea incidents (2023-2024) involving suspected sabotage of critical infrastructure have accelerated discussions on seabed security. Germany, Sweden, and Finland have proposed enhanced NATO protection for Baltic Sea cables.

International best practices suggest that cable protection requires a combination of technical measures (diversity, redundancy), legal frameworks (international conventions), and diplomatic engagement (bilateral agreements with transit states).