U.S. and Japan to build F‑35 missile plant in Japan, boosting Indo‑Pacific weapons output
The United States and Japan have agreed to establish a missile production facility in Japan to manufacture advanced medium‑range air‑to‑air missiles for F‑35 fighters under an initiative called Operation Supercharge. The project shifts more of the alliance’s weapons manufacturing into the Indo‑Pacific and is meant to strengthen regional supply lines.
A new missile factory planned for Japan is set to turn U.S.–Japan defense coordination into concrete production capacity in the Indo‑Pacific.
Washington and Tokyo have agreed to set up a missile production facility in Japan under an initiative called Operation Supercharge. Officials announced the arrangement during defense talks in the Philippines. The plant is intended to build advanced medium‑range air‑to‑air missiles used by F‑35 fighters, expanding the alliance’s ability to arm its aircraft closer to where they operate.
These missiles are a central part of modern air combat for countries that fly F‑35s and other Western‑made jets. They let pilots engage hostile aircraft at distance, rather than relying mainly on short‑range dogfights. Producing them in Japan is designed to shorten the supply line to bases across the region and increase the total number that can be manufactured at a time when demand for precision weapons is rising in several conflict zones.
For Japan, hosting this kind of facility fits with a broader shift in defense policy. After decades of tight limits on arms production and export, Tokyo has been easing some restrictions in response to North Korean missile activity, China’s military buildup and concern about Russia’s moves in Asia. A plant that produces key munitions for F‑35s pulls Japan further into the supply chain that supports U.S. and allied air power.
The announcement also reflects lessons from recent wars, where militaries burned through stocks of guided weapons faster than expected. When munitions have to be shipped from factories far from the front, any disruption at ports or along sea lanes can slow resupply. A production site on Japanese territory gives both U.S. forces in the region and Japan’s own Self‑Defense Forces a nearer source of missiles during a drawn‑out crisis.
That the deal was made public during defense talks in the Philippines underlines how the United States is trying to connect several regional security partners, including Japan and the Philippines, rather than treating each relationship in isolation. A stronger industrial base in Japan supports that wider network.
China and North Korea have already criticized what they see as the spread of U.S. military infrastructure in East Asia. While one missile plant does not quickly alter the regional balance of power, it signals that the United States and Japan are planning for long‑term competition and sustained operations.
How much this move changes the picture will depend on how fast the facility is built, whether it later takes on additional missile types or components, and how other regional actors adjust. Any follow‑on agreements to produce other air, naval or ground‑launched weapons in Japan or nearby countries would indicate that Operation Supercharge is part of a wider reorganization of allied arms production in the Indo‑Pacific.
Sources
- OSINT