Marcos Visit Signals Deeper Japan-Philippines Strategic Ties

The state visit of Philippine President Ferdinand Marcos Jr. to Japan from May 26 to May 29 marks a significant step in the evolving strategic partnership between Manila and Tokyo.

The trip comes at a time when both countries are deepening cooperation on maritime security, economic resilience, and regional stability in the Indo-Pacific, and defense modernization. It is also the first visit by the Philippine leader to Japan in over a decade.

The year 2026 also marks the 70th anniversary of their bilateral and diplomatic ties, and President Marcos received one of the highest awards in Japan, the Grand Cordon of the Supreme Order of the Chrysanthemum on May 27.

The timing is particularly significant as it reflects how the Philippines under Marcos Jr is recalibrating its foreign policy amid great-power competition. At the same time, Japan is increasingly adopting a proactive regional security under Prime Minister Sanae Takaichi, especially through deeper defense partnerships with Southeast Asian countries.

Expanding Security Ties

At the very core of the visit is an expanding security partnership amidst Japan's proactive security role under its Free and Open Indo-Pacific (FOIP) vision.

The Philippines finds itself on the front lines of maritime tensions with China in the South China Sea. This strategic convergence has brought the two nations closer than at any point in their diplomatic history.

One of the key pillars of their evolving partnership is the Reciprocal Access Agreement (RAA). It provides a legal and logistical framework that enables Japan's Self-Defense Forces (SDF) and the Armed Forces of the Philippines (AFP) to operate in each other's territory for training, humanitarian assistance, and joint exercises.

This is the first such agreement between Japan and a Southeast Asian country, signaling a new phase in Tokyo's external security engagement. Discussions during the visit are expected to revolve around operationalizing this agreement and further improving interoperability between the two militaries.

The two countries' increasing defense cooperation was also exemplified during the Balikatan Exercise 2026, in which Japan's active operational role was significant for the first time. Japan fired a Type 88 surface-to-ship missile from the Philippines during the exercise.

Cooperation at Sea

Maritime security also remains a critical domain of cooperation. The Philippines has been facing persistent challenges in the West Philippine Sea, where it has rampant disputes with China. Even though Japan is not a claimant in the South China Sea, it has strong strategic stakes in maintaining freedom of navigation and securing vital sea lanes that connect the Indo-Pacific.

Japan has become a major supplier of maritime security assistance to the Philippines through its Official Security Assistance (OSA) Program, including patrol vessels, surveillance systems and training for coast guard personnel. The Philippine Coast Guard has also benefited from Japanese assistance by receiving large multi-role response vessels that have further strengthened its ability to patrol its exclusive economic zone.

*LDP Policy Research Council Chair Takayuki Kobayashi meets Philippine Defense Secretary Gilberto Teodoro Jr., January 7, Manila. (©Kyodo)*

Strategic and Economic Ties

The two countries will also begin negotiations on an intelligence-sharing agreement for allowing the exchange of classified security data. Known as a General Security of Military Information Agreement (GSOMIA), the pact would help facilitate closer bilateral military ties, as well as cooperation with their mutual ally, the United States.

From an economic perspective, Japan is one of the Philippines' most important partners, and the state visit is expected to reaffirm the commitments to infrastructure development and investment cooperation. Japan has been a leading provider of Official Development Assistance (ODA), funding several infrastructure projects like railways, bridges and ports.

Moreover, the visit is expected to focus on energy security cooperation, with both leaders likely to reach an agreement in this area, which is a key part of Manila's policy under the Japan-led POWERR Asia Framework. This would benefit the Philippines in stockpiling fuel and further assistance in building infrastructure. The move also aligns with broader Indo-Pacific economic security concerns, especially the need to reduce dependency on single supply sources and enhance resilience.

The Future of Japan–Philippines Relations

The Marcos visit signals continuity in the diversification of Philippine security partnerships as Manila is expanding cooperation with middle powers like Japan to strengthen deterrence and strategic flexibility. It serves as a demonstration of long-term reconciliation and shared regional interests and is a structured effort to consolidate a quasi-strategic alliance between Manila and Tokyo.

From Japan's perspective, deepening ties with the Philippines could reinforce its maritime security perimeter in the Western Pacific and enhance its FOIP vision. It will also allow the country to play a more active role in shaping regional security norms without abandoning its constitutional constraints.

Despite the deepening partnership between Manila and Tokyo, both countries face the delicate challenge of maintaining economic relations with China while strengthening security cooperation that Beijing may view with suspicion. The Philippines also faces domestic political sensitivities surrounding foreign military presence, while Japan continues to navigate the constitutional limits on collective self-defense.

As Indo-Pacific security dynamics continue to evolve, the Japan-Philippines relationship is shifting from aid-based cooperation to a strategic partnership centered on defense, economic resilience, and regional security. The partnership is likely to remain an important stabilizing force in the regional balance of power.

Author: Simran Walia