Japan and the United States have agreed to establish a facility in Japan for the joint production of advanced medium-range air-to-air missiles, Japanese Defense Minister Shinjiro Koizumi announced Wednesday. The joint effort, called “Operation Supercharge,” will involve a final assembly and inspection plant for the Advanced Medium-Range Air-to-Air Missile (AMRAAM) in Japan; Koizumi said the missiles are essential for F-35 fighter jets.
Koizumi announced the plan in Cebu, Philippines, on the sidelines of an annual meeting of Southeast Asian defense chiefs and their counterparts. He cited China's increasing naval activity as an example of the challenging security environment, noting that three Chinese destroyers and a coast guard ship crossed the Osumi Strait south of Kyushu this week, the first such fleet configuration his ministry had observed.
Koizumi said he and US Defense Secretary Pete Hegseth "shared a sense of crisis … regarding the increasingly severe regional situation and we agreed to strengthen the deterrence and response capabilities of the Japan-U.S. alliance with greater speed and intensity than ever before."
Hegseth, speaking to ASEAN defense ministers, described the US approach as “strong, quiet and clear”, strong enough to deter coercion, quiet to avoid needless escalation, and clear so that friends and adversaries understand Washington's stance. Hegseth also assured the Philippines, Washington’s oldest treaty ally in Asia, of robust deterrence against Chinese actions in the South China Sea.
Australian Defense Minister Richard Marles said Australian forces, along with allies like the US, will press on with efforts to defend the rule of law despite China's assertiveness. “Freedom of navigation on the high seas is profoundly important for Australia,” Marles said. Australia protested last year after a Chinese J-16 fighter aircraft released flares and passed within 30 meters of an Australian P-8 Poseidon surveillance jet over the disputed waters.
The South China Sea is the site of overlapping claims by China, the Philippines, Vietnam, Malaysia, Brunei, and Taiwan, while Japan and China have a separate dispute over islands in the East China Sea. Confrontations between Chinese and Philippine vessels have escalated, and Washington has warned it is obligated to defend the Philippines if Filipino forces come under armed attack.
Analysis
Why This Matters
- The joint missile plant represents deepened US-Japan defense industrial cooperation, moving from a traditional alliance to co-production aimed at accelerating deterrence capabilities.
- The timing underscores growing alarm over Chinese naval assertiveness, including recent fleet movements near Japan and ongoing confrontations in the South China Sea, raising the risk of miscalculation.
- Australia's strong statement reaffirms a unified front among US allies in the Pacific, signaling continued commitment to the rules-based order despite provocations.
Background
The US-Japan security alliance has been a cornerstone of stability in the Indo-Pacific for decades. The F-35 fighter jet, equipped with the AMRAAM missile, is among the world's most advanced aircraft. China's claims in the South China Sea, and its island dispute with Japan in the East China Sea, have long been sources of tension, with Beijing increasingly asserting its sovereignty through naval patrols and confrontations.
Key Perspectives
Japan's Defense Minister Shinjiro Koizumi: expressed concern over China's naval activity and said the missile agreement will strengthen deterrence.
US Defense Secretary Pete Hegseth: described the US approach as strong, quiet, and clear, and assured allies of the US commitment to deter aggression.
Australia's Defense Minister Richard Marles: affirmed Australia's commitment to the rules-based order and freedom of navigation.
China (as reported by the source): claims virtually the entire South China Sea and disputes Japanese-controlled islands in the East China Sea.
What to Watch
- Further Chinese responses to the announced missile facility, such as increased naval patrols or diplomatic protests.
- The timeline and implementation of Operation Supercharge and its impact on regional deterrence.
- Potential for similar US co-production agreements with other allies in the region, such as Australia or the Philippines.
Checked
12 claims in this story checked against 1 source: 11 supported.
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- SupportedThe United States and Japan agreed to establish a facility in Japan for joint missile production.Fortune | FORTUNE: “The United States and Japan have agreed to establish a Japanese facility for the joint production of advanced medium-range air-to-air missiles”
- SupportedOperation Supercharge is intended to produce AMRAAM missiles for F-35s.Fortune | FORTUNE: “The missiles that will be produced as part of a joint effort called “Operation Supercharge” are essential for the F-35 fighter jets, Koizumi said.”
- SupportedThe missile-production plan is presented amid concern over China’s naval activity.Fortune | FORTUNE: “Koizumi renews concern over China’s naval activity”
- SupportedThe agreement is for a final assembly and inspection plant in Japan for AMRAAM missiles.Fortune | FORTUNE: “The two sides agreed to build a final assembly and inspection plant for the Advanced Medium-Range Air-to-Air Missile, or AMRAAM, in Japan, he said.”
- SupportedKoizumi said he and Hegseth “shared a sense of crisis … regarding the increasingly severe regional situation and we agreed to strengthen the deterrence and response capabilities of the Japan-U.S. alliance with greater speed and intensity than ever before.”Fortune | FORTUNE: “Koizumi said he “shared a sense of crisis … regarding the increasingly severe regional situation and we agreed to strengthen the deterrence and response capabilities of the Japan-U.S. alliance with greater speed and intensity than ever before.””
- SupportedKoizumi announced the plan in Cebu on Wednesday, on the sidelines of an annual meeting of Southeast Asian defense chiefs and their counterparts.Fortune | FORTUNE: “Japanese Defense Minister Shinjiro Koizumi made the announcement in a news conference Wednesday night in the central Philippine province of Cebu, where he met U.S. Defense Secretary Pete Hegseth on the sidelines of an annual meeting of Southeast Asian defense chiefs and their major Asian and Western counterparts.”
- SupportedThree Chinese destroyers and a coast guard ship crossed the Osumi Strait this week; Koizumi said it was the first such fleet configuration his ministry had observed.Fortune | FORTUNE: “He said that three Chinese destroyers and a coast guard ship together crossed the Osumi Strait south of the southern main island of Kyushu and headed east to the Pacific Ocean this week. It was the first such fleet configuration his ministry has spotted, he said.”
- SupportedHegseth described the US approach as “strong, quiet and clear,” and explained that it was intended to deter coercion, avoid needless escalation, and make Washington’s stance understood.Fortune | FORTUNE: ““The approach we’re taking, we describe as strong, quiet and clear,” Hegseth told the ASEAN defense chiefs. “Strong enough to deter coercion and aggression, quiet enough to avoid needless escalation or public theatrics to let our actions speak for themselves.””
- Partly supportedHegseth assured the Philippines of robust deterrence against Chinese actions in the South China Sea.Fortune | FORTUNE: “Hegseth has assured the Philippines, the oldest treaty ally of Washington in Asia, that the Trump administration will build a robust deterrence against China’s increasingly aggressive actions in the disputed South China Sea .”
- SupportedMarles said Australian forces, with allies such as the US, would continue efforts to defend the rule of law despite China’s assertiveness.Fortune | FORTUNE: “Australian Defense Minister Richard Marles said his country’s forces, along with allies like the U.S., will press on with efforts to defend the rule of law despite China’s increasing assertiveness”
- SupportedMarles said, “Freedom of navigation on the high seas is profoundly important for Australia.”Fortune | FORTUNE: ““Freedom of navigation on the high seas is profoundly important for Australia.””
- SupportedAustralia protested last year after a Chinese J-16 released flares and passed within 30 metres of an Australian P-8 Poseidon over the disputed waters.Fortune | FORTUNE: “Australia protested last year after a Chinese J-16 fighter aircraft released flares and passed within 30 meters (100 feet) of an Australian P-8 Poseidon surveillance jet over the disputed waters.”