KIMS Periscope

KIMS Periscope No. 422

Economic Leverage to Increased Maritime Power: China’s Djibouti Footprint and Implications for South Korea

Researcher, University of South Wales in the United Kingdom

Lewis Jones

Abstract

China’s overseas military presence is expanding in conjunction with the Belt and Road Initiative (BRI). Djibouti, China’s first overseas military base, provides a strategically critical foothold at the entrance to the Red Sea, enabling sustained naval operations into the Indian Ocean and beyond. This article examines how economic pressures, debt exposure, and infrastructure dependence contributed to Djibouti’s decision to host the People’s Liberation Army Support Base (PLASB), and how that base enhances the People’s Liberation Army Navy’s (PLAN) blue-water capability. It argues that this development is not an isolated case but a model that could shape future Chinese access agreements across the Indo-Pacific and wider maritime domain. The article concludes with implications for South Korean maritime security strategy and why the issue requires urgent prioritisation in Seoul’s policy landscape.

Introduction: Why Djibouti Matters for Korea and the Indo-Pacific

China’s maritime rise is transforming global sea-power balances, particularly in chokepoint regions essential to international trade. More than 90% of South Korea’s energy supply transits maritime routes vulnerable to foreign interference. This includes the Bab el-Mandeb, a narrow maritime corridor linking the Indian Ocean to Europe through the Red Sea. Chinese access to this chokepoint through its Djibouti base holds significant implications for freedom of navigation and the security of trade routes vital to Korea’s economic resilience.

Beijing’s approach blends economic engagement, infrastructure investment, and military positioning — a strategy often described as “hybrid power projection”. Djibouti now serves as a blueprint for how China can convert financial leverage into long-term defence access while avoiding overt military confrontation. Understanding this model is crucial for anticipating similar developments in regions with high Korean strategic stakes.

China’s Djibouti Expansion: From Debt Diplomacy to Military Presence

Djibouti’s geographical location has drawn major powers for centuries, it currently hosting US, French, Japanese, and Italian facilities. China entered through BRI-aligned infrastructure financing, investing over $1.4 billion and becoming the state’s largest creditor. Key projects such as the Addis Ababa–Djibouti railway, locked Djibouti into dependency on Chinese capital and logistics networks.

Research suggests Djibouti’s debt vulnerability reduced its bargaining position and empowered Beijing to secure long-term strategic access. By 2017, the PLA Navy inaugurated the People’s Liberation Army Support Base in Djibouti (PLASB) —which was its first acknowledged overseas facility.

Chinese military literature frames such basing rights as essential to protecting China’s overseas interests including anti-piracy deployments and patrolling commercial sea lanes. However, Western and regional analysts argue that logistics support is only one dimension; the base provides a permanent force projection hub.

Djibouti’s leadership continues to emphasise its sovereignty, arguing it balances external powers for national benefit. Yet, the political situation shifted as economic reliance constrained the idea of optionality, a pattern visible in other BRI-linked states.

Maritime Strategic Impact: Blue-Water Capacity and Legal Realities

The PLASB has materially improved China’s sustainment and operational reach:

Enhanced Naval Reach

The base supports replenishment, repair, intelligence operations, and amphibious logistics that enable:

Longer-duration blue-water deployments into the Indian Ocean and Mediterranean
Escort, evacuation, and special forces operations far from mainland China
Scalable force presence in crises

It forms part of a transition from coastal defence to expeditionary posture, representing the PLAN’s entry into great-power maritime competition.

Militarised Infrastructure

Satellite analysis shows hardened shelters, deep-water pier expansions, and the capacity to host aircraft — capabilities beyond anti-piracy needs. This creates strategic uncertainty, particularly amid US–China rivalry in the region.

Legal Constraints and Strategic Risks

Hosting a foreign base introduces dilemmas for Djibouti:

Would it risk severe conflict on its soil in a great-power confrontation?
How does it ensure sovereign oversight of Chinese military operations?
What recourse exists against unilateral force deployment?

The legal permissibility of overseas bases under international law is recognised, but their operational use remains politically contested. And Djibouti’s reduced leverage over Chinese activity increases uncertainty for regional maritime stability.

Wider Pattern: Beyond Djibouti

Djibouti is not an anomaly, as there are other cases of Chinese economic influence being put on other countries, resulting in the benefit for its military.

Location	Strategic Purpose	Status
Oman / UAE	Entry to Gulf + oil SLOC control	Expanded port access & logistics
Pakistan (Gwadar)	IOR gateway + India encirclement	Civil-military integration growing
Sri Lanka (Hambantota)	Debt-for-equity precedent	Limited but potential naval staging point

These sites reinforce a multipronged overseas posture combining:

Debt leverage
Political alignment with host elites
Commercial–military dual use

Experts warn that through this pattern China will increasingly shape maritime governance and influence in contested regions.

Implications for South Korea

South Korea is a trading nation whose maritime security depends on rules-based access to sea lanes distant from its own territory. China’s basing model affects Seoul in four key ways:

Exposure of South Korean commerce to geopolitical leverage:
Control at chokepoints like Bab el-Mandeb could impact Korea’s economic stability.
Potential erosion of maritime norms:
Selective interpretation of sovereignty and militarised infrastructure challenge freedom of navigation principles.
New risks to South Korean naval and humanitarian operations:
ROKN antipiracy missions operating near Djibouti may encounter greater PLAN monitoring and influence.
Future access negotiations may shift balance:
Dual-use ports in South Asia or Africa could reduce South Korean operational freedom over time.

Policy Recommendations

South Korea should prioritise:

Deepened engagement with Djibouti and Red Sea partners to secure reliable maritime access.
Expanded cooperation with Japan, Europe, and US on chokepoint security.
Maritime infrastructure investment with transparency standards to compete with BRI’s influence.
Dedicated Indo-Pacific basing presence (rotational) to sustain Korean reach.
Strategic foresight capability monitoring dual-use port evolution.

South Korea’s strategy must recognise that maritime competition is shifting into critical transit zones far from Northeast Asia.

Conclusion

China’s Djibouti base is a decisive step in its transformation into a global naval power. While framed as supporting international security, the base provides Beijing with a powerful tool for economic and military leverage over vital sea lanes. The model being infrastructure dependency leading to security access, may be exported across regions central to South Korea’s maritime lifelines.

For Seoul, this is a priority concern, not a distant issue. South Korea must proactively defend its maritime interests by ensuring that emerging overseas logistics networks operate within a transparent, rules-based system that preserves access for all. Djibouti’s lessons are already shaping the future of global sea power; South Korea cannot afford to be idle as these shifts accelerate.

Lewis Jones is a PhD researcher at the University of South Wales in the United Kingdom. His research includes Hybrid Warfare, Chinese Strategy and Asian Security. He is also the Operational Resilience Coordinator at Cardiff Airport.