TOKYO – As global economic security concerns escalate, Japan is intensifying its collaborative efforts with Southeast Asian nations, recognizing the region's pivotal role in its own future. Recent developments highlight a shift from traditional aid to a partnership based on mutual benefit and equal footing.

On September 12, 2024, the expanded Sihanoukville Autonomous Port (PAS) in Cambodia was inaugurated, a project funded by Japanese yen loans. The port, handling 70% of Cambodia's marine container traffic, will see its capacity increase to 1 million TEU annually, bolstering the country's export-driven economy. Prime Minister Hun Manet emphasized the port's importance to national stability and future potential, while Japanese Ambassador Atsushi Ueno highlighted its centrality to the Japan-Cambodia partnership.

This project underscores Japan's commitment to strengthening supply chains in Southeast Asia, where Japanese companies like AEON Mall and Oji Holdings Corp. operate.

Furthering technological cooperation, Japan is supporting the development of large language models (LLMs) tailored to Southeast Asian languages. At the July 2024 Asian Business Summit, former Prime Minister Fumio Kishida announced initiatives to enhance conversational AI, enabling local populations to better utilize AI technology. Companies like Elyza, Inc., are developing Thai-based LLMs, promoting a more inclusive research environment.

Japan is also leading decarbonization efforts through the Asia Zero Emission Community (AZEC). Partnerships like the memorandum of understanding between the Electricity Generating Authority of Thailand (EGAT) and Mitsubishi Heavy Industries, Ltd. for hydrogen-based power generation, and EGAT’s collaboration with IHI Corp. on biomass fuel, demonstrate this commitment.

In the communications sector, NTT Docomo, Inc. is testing Open Radio Access Network (Open RAN) in the Philippines and Singapore, enhancing network flexibility and security. Additionally, Japan and ASEAN are collaborating on cross-border QR code payments and electronic waste recycling.

These initiatives reflect a strategic shift in Japan-ASEAN relations. While China maintains its position as the most influential economic power in Southeast Asia, according to a Yusof Ishak Institute (ISEAS) survey, Japan is highly regarded for its reliability and trustworthiness. However, Japan’s influence as a political and strategic power is significantly lower.

Professor Nobuhiro Aizawa of Kyushu University notes that ASEAN, a burgeoning market, now selects partners based on value. With a population exceeding 680 million and a rapidly growing GDP projected to surpass Japan's by 2030, ASEAN is a vital partner for Japan's future.

Concerns over China's growing regional influence and potential trade tensions with a returning Trump administration in the U.S. highlight the importance of strengthening Japan-ASEAN ties. By cultivating a relationship built on trust and equality, both Japan and ASEAN can achieve mutual growth and independence in an increasingly complex global landscape.