Sources: China begins impeding South China Sea subsea internet cable projects due to spying fears, imposing strict permit requirements and delaying approvals
Context & Ripple Effects
This report is the Chinese countermove in a cable war that has been escalating since early 2023. After China Telecom and China Mobile pulled their ~20% stake from an Asia-Europe line once SubCom won the build contract, the US went further, reportedly helping SubCom win its $600M Asia-Europe bid through incentives and investor pressure. Beijing's state-owned telecoms responded by planning a $500M rival undersea network linking Asia, the Middle East, and Europe.
First-order effects
- Cable consortium members and builders with projects crossing the South China Sea now face strict Chinese permit requirements and stalled approvals, directly delaying routes through those waters.
- The delay tactic pressures consortia to reroute or restructure projects to avoid Chinese jurisdiction, raising costs and timelines for the operators involved.
Second-order effects
- Slower Chinese approvals make the US-aligned alternative — SubCom-built lines backed by Washington, as in the $600M Asia-Europe bid — the default for carriers that cannot tolerate permitting risk.
- China's planned $500M state-telecom cable network becomes the fallback path for traffic its own carriers and partners can no longer route through contested waters, hardening the parallel-systems dynamic already visible in the US warnings to Google and Meta about Chinese repair ships.
Third-order effects
- Permitting power over territorial waters is emerging as the subsea equivalent of export controls — a chokepoint that, combined with the FCC's planned ban on Chinese tech in cables landing in the US, pushes global cable infrastructure toward bifurcation into non-interconnecting US- and China-aligned systems.
- If the pattern holds, consortium membership itself becomes a geopolitical alignment decision, with carriers forced to choose sides on each route rather than buying capacity on a single global mesh.
The trend: Subsea internet infrastructure is splitting into competing US- and China-aligned systems, with territorial permitting and build contracts used as leverage over who controls each route.