Marcos Jr. Open to Joint Oil Exploration in South China Sea

by Ahmed Ibrahim

President Ferdinand Marcos Jr. Has signaled a potential shift in Manila’s approach to the energy-rich but volatile waters of the South China Sea, stating he is open to the resumption of joint oil exploration with China. However, the administration has made it clear that any joint oil exploration with China will follow the country’s constitution, a caveat that places the Philippines’ legal sovereignty at the center of any future agreement.

The move comes as the Philippines grapples with looming energy shortages and the need to diversify its power sources as older plants go offline. By opening the door to cooperation, Marcos is attempting a delicate balancing act: pursuing economic security through resource extraction whereas maintaining a firm stance on territorial integrity in a region plagued by maritime skirmishes and overlapping claims.

The constitutional requirement is not merely a formality but a significant legal hurdle. The 1987 Constitution of the Philippines mandates that the exploration, development and utilization of natural resources must be under the full control and supervision of the state. Any agreement that would cede sovereign rights or allow a foreign power to exercise jurisdiction over these resources could be challenged in the Supreme Court.

Navigating the Legal Framework of Sovereignty

For the Marcos administration, the primary challenge is defining “joint exploration” without conceding the legal victory won in 2016. The Permanent Court of Arbitration in The Hague ruled that China’s “nine-dash line” claim had no legal basis under the United Nations Convention on the Law of the Sea (UNCLOS), affirming the Philippines’ exclusive economic zone (EEZ) in the West Philippine Sea.

To avoid constitutional breaches, legal experts suggest that any deal must be structured as a service contract or a commercial partnership rather than a political treaty that recognizes shared sovereignty. Under this model, the Philippines would retain ownership of the resources, while China would provide the technical expertise and investment required to extract the oil and gas.

The stakes are high, as the Malampaya gas field—the country’s primary source of domestic natural gas—is seeing its reserves deplete. Without recent discoveries, the Philippines faces an increasing reliance on expensive imported liquefied natural gas (LNG), which threatens electricity price stability for millions of citizens.

The Geopolitical Tug-of-War

While the prospect of energy cooperation offers a diplomatic olive branch, it occurs against a backdrop of heightened tension. The Philippine Coast Guard and Chinese vessels have engaged in numerous confrontations near Second Thomas Shoal and Scarborough Shoal, often involving water cannons and collisions.

The United States, a treaty ally of the Philippines, closely monitors these developments. While Washington supports Manila’s sovereign rights, the shift toward a pragmatic energy deal with Beijing could introduce new complexities into the regional security architecture. The administration must ensure that economic cooperation does not undermine the military modernization and joint patrol agreements currently being strengthened with Western allies.

Key Constraints and Objectives for Joint Exploration
Factor Philippine Position Chinese Position
Legal Basis 1987 Constitution &amp. 2016 Arbitral Ruling Historical Rights / Nine-Dash Line
Primary Goal Energy Security & Sovereign Rights Regional Influence & Resource Access
Operational Model State-controlled Service Contracts Joint Development Agreements (JDAs)

What So for Regional Stability

If a deal is reached, it could serve as a blueprint for other claimant states in the South China Sea to decouple resource extraction from sovereignty disputes. However, the “constitution-first” approach means that the Philippine Senate and the judiciary will likely play a central role in vetting any memorandum of understanding.

What So for Regional Stability

The potential for a deal depends heavily on whether Beijing is willing to accept a framework where the Philippines maintains legal jurisdiction over the waters. Historically, China has preferred “Joint Development” models that bypass the question of who owns the seabed, a position that contradicts the Philippine constitutional mandate for state control.

Stakeholders affected by this decision include not only the diplomatic corps but also the energy sector and the fishing communities in Palawan and Zambales, who often find themselves in the crossfire of maritime disputes. For these communities, the promise of energy independence is secondary to the immediate need for safe access to traditional fishing grounds.

Timeline of Energy Diplomacy

  • 2016: The Permanent Court of Arbitration rules in favor of the Philippines regarding its EEZ.
  • 2023-2024: Escalation of maritime tensions leads to a “new normal” of frequent coast guard confrontations.
  • Recent Months: President Marcos Jr. Expresses openness to joint exploration to address energy shortages.
  • Current Status: Legal review of constitutional compatibility for potential agreements.

The path forward remains uncertain. While the economic incentive to extract oil and gas is immense, the political cost of appearing “soft” on sovereignty is a risk the Marcos administration cannot afford. The insistence on constitutional adherence serves as a safeguard, ensuring that any ability to power the nation’s grid does not come at the expense of its national identity.

The next critical checkpoint will be the upcoming bilateral meetings between Manila and Beijing, where the specific technical and legal parameters of any proposed exploration agreement are expected to be discussed. Official updates from the Department of Foreign Affairs (DFA) will be essential in determining if these talks move from theoretical openness to a formal framework.

We invite readers to share their perspectives on the balance between energy security and national sovereignty in the comments below.

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