Defense & Military
US Approves $39M JASSM-ER Missile Sale to Japan for Defense Modernization
The recent approval by the U.S. State Department for the sale of 16 AGM-158B/B-2 Joint Air-to-Surface Standoff Missile-Extended Range (JASSM-ER) missiles to Japan marks a significant step in Japan’s ongoing efforts to modernize its military capabilities. Valued at $39 million, this sale includes not only the missiles but also training missiles, containers, support equipment, spare parts, and logistics services. This move is part of Japan’s broader strategy to enhance its defense systems in response to regional security challenges, particularly the growing military presence of China.
The JASSM-ER, developed by Lockheed Martin, is a long-range, air-launched cruise missile designed to provide a standoff capability, allowing aircraft to launch the missile from a safe distance, thereby reducing the risk of counterattack. With an effective range of approximately 1,000 kilometers, the JASSM-ER is equipped with a fragmentation/penetration explosive warhead, making it a formidable weapon in Japan’s arsenal. This latest approval follows an earlier acquisition of 50 JASSM-ER missiles in mid-2023, valued at $104 million, indicating Japan’s continued commitment to bolstering its long-range strike capabilities.
Japan’s plan to upgrade its F-15J fighters was restarted in 2022, and the integration of the JASSM-ER missiles into its F-15J, F-35A, and F-35B fighter jets is a critical component of this modernization effort. The F-15J is undergoing upgrades to support new air-to-air and air-to-surface missiles, while the F-35A and F-35B are part of Japan’s fifth-generation fighter fleet. The inclusion of the F-35B, which will be deployed from the Izumo-class helicopter carriers of the Japan Maritime Self-Defense Force, highlights Japan’s strategic plan to utilize these missiles across various platforms, including those capable of operating from naval vessels.
Japan has been actively enhancing its military capabilities in recent years, driven by regional security concerns and the need to maintain a strategic balance in the Asia-Pacific region. The acquisition of advanced missiles like the JASSM-ER is a key part of this effort. The Japan Air Self-Defense Force (JASDF) has been modernizing its fleet, including the upgrade of its F-15J and the introduction of the F-35A and F-35B fighter jets. These upgrades are aimed at ensuring that Japan can effectively respond to current and future threats, particularly from neighboring countries with growing military capabilities.
The modernization of the F-15J fleet is particularly significant. The F-15J, a variant of the McDonnell Douglas F-15 Eagle, has been a mainstay of Japan’s air defense for decades. However, with the rapid advancements in military technology, the F-15J has needed upgrades to remain relevant in modern warfare. The integration of the JASSM-ER missiles is a critical component of these upgrades, providing the F-15J with a long-range strike capability that enhances its effectiveness in both air-to-air and air-to-surface missions.
In addition to the F-15J, Japan’s fifth-generation fighter fleet, comprising the F-35A and F-35B, is also being equipped with the JASSM-ER missiles. The F-35A is a conventional takeoff and landing variant, while the F-35B is a short takeoff and vertical landing variant. The inclusion of the F-35B in the JASSM-ER program is particularly noteworthy, as it allows Japan to deploy these missiles from its Izumo-class helicopter carriers, significantly enhancing its naval strike capabilities. This integration underscores Japan’s strategic focus on multi-domain operations, ensuring that its military can operate effectively across land, air, and sea.
“The proposed sale will enhance Japan’s ability to address current and future threats by providing a standoff strike capability through advanced long-range strike systems for employment on JASDF combat aircraft, including but not limited to the F-15J and F-35A/B. Japan will have no difficulty incorporating these items and services into its armed forces.” – U.S. Department of State
The approval of the JASSM-ER sale to Japan fits into broader global and industry trends. The acquisition of advanced missiles like the JASSM-ER reflects Japan’s efforts to bolster its defense capabilities in response to regional security challenges, particularly the growing military presence of China. This move is part of a larger trend of military modernization among countries in the Asia-Pacific region, where nations are investing in advanced weaponry to maintain a strategic balance.
The sale is also indicative of the ongoing global arms trade, where countries are seeking to acquire advanced military technologies to enhance their defense capabilities. The involvement of major defense contractors like Lockheed Martin highlights the commercial and strategic aspects of such transactions. Lockheed Martin has recently expanded its manufacturing facilities to increase production efficiency and capacity, ensuring that it can meet the growing demand for advanced military systems like the JASSM-ER. In addition to the immediate strategic benefits, the sale of JASSM-ER missiles to Japan also has broader implications for the global defense industry. It underscores the importance of long-range strike capabilities in modern warfare and highlights the role of advanced missile systems in shaping the future of military operations. As countries continue to invest in these capabilities, the demand for advanced missile systems like the JASSM-ER is likely to grow, driving further innovation and development in the defense industry.
The approval of the $39 million JASSM-ER sale to Japan is a significant development in Japan’s ongoing efforts to modernize its military capabilities. By equipping its F-15J, F-35A, and F-35B fighter jets with these advanced long-range missiles, Japan is enhancing its ability to respond to current and future threats, particularly in the context of regional security challenges. This move is part of a broader trend of military modernization in the Asia-Pacific region, where countries are investing in advanced weaponry to maintain a strategic balance.
Looking ahead, the integration of the JASSM-ER missiles into Japan’s military arsenal is likely to have far-reaching implications. It underscores the importance of long-range strike capabilities in modern warfare and highlights the role of advanced missile systems in shaping the future of military operations. As countries continue to invest in these capabilities, the demand for advanced missile systems like the JASSM-ER is likely to grow, driving further innovation and development in the defense industry. Japan’s acquisition of these missiles is a clear indication of its commitment to maintaining a strong and capable defense force in the face of evolving security challenges.
What is the JASSM-ER missile? Why is Japan acquiring JASSM-ER missiles? Which aircraft will be equipped with the JASSM-ER missiles? Sources: Shephard Media, Aviation Week Network, Wikipedia, Defence Connect, Zona Militar, 19FortyFive
US Approves Additional $39 Million JASSM-ER Order for JASDF’s Aircraft
Japan’s Military Modernization Efforts
Global and Industry Context
Conclusion
FAQ
The JASSM-ER (Joint Air-to-Surface Standoff Missile-Extended Range) is a long-range, air-launched cruise missile developed by Lockheed Martin. It has an effective range of approximately 1,000 kilometers and is designed to provide a standoff capability, allowing aircraft to launch the missile from a safe distance.
Japan is acquiring JASSM-ER missiles to enhance its long-range strike capabilities and modernize its military forces. This is part of Japan’s broader strategy to respond to regional security challenges, particularly the growing military presence of China.
The JASSM-ER missiles will be integrated into the Japan Air Self-Defense Force’s F-15J, F-35A, and F-35B fighter jets. The F-15J is undergoing modernization to support these missiles, while the F-35A and F-35B are part of Japan’s fifth-generation fighter fleet.
Defense & Military
Embraer and Saab Unveil First Gripen E Fighter Produced in Brazil
Embraer and Saab unveiled the first Gripen E fighter jet assembled in Brazil, enhancing local defense manufacturing and fulfilling a 2014 contract.
This article is based on an official press release from Embraer.
On March 25, 2026, Embraer, Saab, and the Brazilian Air Force (FAB) marked a historic milestone in Latin American aerospace by unveiling the first Gripen E fighter jet manufactured on Brazilian soil. The rollout ceremony took place at Embraer’s industrial complex in Gavião Peixoto, São Paulo State, officially introducing the first supersonic fighter aircraft ever produced in the country.
According to the official press release, the event drew high-profile attendees, including Brazilian President Luiz Inácio Lula da Silva, Swedish Ambassador Karin Wallensteen, and top executives from both Embraer and Saab. The presentation of the aircraft highlights a successful technology transfer program and elevates Brazil into a select group of nations capable of manufacturing advanced combat aircraft.
The newly unveiled Gripen E is the result of a deeply integrated Brazilian and international supply chain. Embraer’s Gavião Peixoto facility handles the final assembly, utilizing aerostructures manufactured at Saab’s plant in São Bernardo do Campo. According to Embraer, 14 additional aircraft will be built using this exact production model under the current FAB contract.
Before being handed over to the customer, the newly assembled fighter will undergo rigorous functional and production flight testing. Once cleared, it will join the First Defense Group (1st GDA) stationed at the Anápolis Air Force Base.
Company leadership emphasized the broader implications of the rollout. In the press release, Bosco da Costa Junior, President and CEO of Embraer Defense & Security, highlighted the collaborative effort:
“…it symbolizes the strength of a partnership built on trust, long‑term vision, and true cooperation.”
The foundation for this manufacturing achievement was laid in 2014 when the Brazilian government signed a comprehensive contract with Saab. The agreement covers the development and production of 36 Gripen fighters, specifically 28 single-seat Gripen E models and eight two-seat Gripen F variants.
Deliveries from Sweden began in 2020, and the press release notes that at least 10 aircraft have already been handed over to the Brazilian Air Force. The Gripen fleet is already active; since February, the fighters have been executing Quick Reaction Alert (QRA) missions from the Anápolis Air Force Base to safeguard the airspace over Brazil’s federal district. Micael Johansson, President and CEO of Saab, noted the strategic importance of the local production capability, stating in the release:
“…developing, within Brazil, the capability to produce a high-tech supersonic fighter aircraft – fully capable of executing air superiority missions…”
We view the successful rollout of a domestically assembled Gripen E as a transformative moment for Embraer and the Brazilian defense sector. By proving it can assemble and integrate a sophisticated, network-centric supersonic fighter, Embraer significantly enhances its high-end military manufacturing portfolio. This capability not only fulfills Brazil’s immediate national security and airspace defense needs but also positions the Gavião Peixoto facility as a potential regional export and maintenance hub for South America. As neighboring countries evaluate their aging fighter fleets, we believe Brazil’s proven production line could offer Saab a strategic foothold for future Latin American sales.
Where was the first Brazilian-made Gripen E produced? How many Gripen fighters did Brazil order? How many more Gripens will be built in Brazil?
Production and Strategic Partnership
Details of the Gavião Peixoto Facility
Contract History and Operational Status
The 2014 Agreement
AirPro News analysis
Frequently Asked Questions
The aircraft was assembled at Embraer’s industrial complex in Gavião Peixoto, São Paulo State, using components including aerostructures from Saab’s facility in São Bernardo do Campo.
Under a 2014 contract, the Brazilian government ordered 36 Gripen fighters, comprising 28 single-seat Gripen E jets and 8 two-seat Gripen F jets.
According to the Embraer press release, 14 additional aircraft will be produced at the Gavião Peixoto facility under the current contract.
Sources
Photo Credit: Embraer
Defense & Military
Japan Expands F-35B Fleet with Delivery to Nyutabaru Air Base
Japan received three F-35B fighters at Nyutabaru Air Base, advancing its goal to deploy eight F-35Bs by fiscal year 2025 end.
In late March 2026, the Japan Air Self-Defense Force (JASDF) received three additional F-35B Lightning II stealth fighters at Nyutabaru Air Base in Miyazaki Prefecture. According to social media account @thef35 on X, the delivery highlights that procurement
“momentum continues” for the Japanese defense forces.
This latest arrival is a critical milestone. Based on defense research data, the delivery keeps Japan’s Ministry of Defense on track to meet its goal of deploying an initial batch of eight F-35Bs by the end of fiscal year 2025, which concludes on March 31, 2026. Japan received its first three F-35Bs on August 7, 2025, ferried by U.S. pilots, and officially activated the fleet for frontline service during a ceremony on February 7, 2026.
The integration of the Short Take-Off and Vertical Landing (STOVL) aircraft represents a historic shift in Japan’s defense posture. Defense reports indicate Japan plans to acquire 147 F-35s in total, 105 conventional F-35As and 42 F-35Bs, making it the largest operator of the fifth-generation fighter outside the United States.
While the F-35Bs are operated by the JASDF, defense analysts note their primary strategic value lies in their integration with the Japan Maritime Self-Defense Force (JMSDF).
To accommodate the STOVL aircraft, Japan has been modifying its two largest warships, the Izumo-class helicopter destroyers JS Izumo and JS Kaga. According to defense research, these modifications include reshaping the bows into a rectangular configuration and applying heat-resistant deck coatings capable of withstanding the F-35B’s powerful lift fan.
These upgrades were put to the test recently. In October 2024, a U.S. Navy and Marine Corps F-35B successfully conducted the first landing and takeoff trials on the modified JS Kaga off the coast of San Diego, California. This milestone effectively proved the vessel’s capability to operate as a light aircraft carrier, returning fixed-wing carrier aviation to the Japanese fleet for the first time since World War II.
Japan’s acquisition of the F-35B is widely viewed by defense researchers as a direct response to a tightening regional security environment, particularly the rapid military modernization and maritime maneuvers of China in the East and South China Seas. Nyutabaru Air Base is strategically located on Kyushu, Japan’s southernmost main island. Defense reports highlight that this positions the F-35B fleet in close proximity to the Nansei Islands chain, which stretches toward Taiwan and includes the Japanese-administered Senkaku Islands. The STOVL capability allows Japan to project air power from the sea and operate from shorter, austere runways on remote islands.
Under its post-WWII pacifist constitution, Japan has historically maintained a strictly defensive military posture. The deployment of carrier-capable stealth fighters represents a shift toward what defense analysts term “active deterrence.” To navigate political sensitivities regarding offensive capabilities, the Japanese government officially classifies the Izumo and Kaga as “multi-functional destroyers” rather than aircraft carriers.
Despite the strategic momentum, the domestic rollout of the F-35B fleet has faced logistical and political hurdles.
According to defense research data, Japan is constructing a dedicated runway and training facility on the uninhabited island of Mageshima, located roughly 160 kilometers south of Nyutabaru. This facility is intended for F-35B Field Carrier Landing Practice (FCLP) and vertical landing drills.
However, the Mageshima project has been delayed until approximately 2029 or 2030. Consequently, routine vertical landing training must be conducted at Nyutabaru Airports in the interim. This temporary arrangement has triggered protests and concerns from local residents in Miyazaki Prefecture regarding severe aircraft noise pollution.
We view the successful delivery of these F-35Bs as more than just a national defense upgrade for Japan; it is a foundational step for allied interoperability in the Indo-Pacific. By operating the F-35B from modified destroyers, Japan ensures seamless integration with U.S. Navy and Marine Corps forces, as well as other allied operators like the United Kingdom and Italy. This opens the door for future cross-decking operations, where allied jets can land on Japanese ships and vice versa, creating a highly flexible, distributed maritime strike capability that complicates adversary planning in the region.
According to defense procurement data, Japan plans to acquire a total of 147 F-35 military-aircraft, consisting of 105 F-35A conventional takeoff variants and 42 F-35B STOVL variants.
The F-35B features Short Take-Off and Vertical Landing (STOVL) capabilities, allowing it to operate from amphibious assault ships, light aircraft carriers, and short or austere runways. To align with its post-WWII pacifist constitution, which limits offensive military capabilities, Japan officially classifies the modified Izumo-class vessels as “multi-functional destroyers” rather than aircraft carriers.
Sources: @thef35, Defense Research Report
Japan Expands F-35B Fleet with Latest Delivery to Nyutabaru Air Base
Strategic Shift: The “Lightning Carriers”
Vessel Modifications and Sea Trials
Geopolitical Drivers and Regional Defense
Defending the Nansei Islands
Domestic Challenges and Infrastructure
Local Impact at Nyutabaru
AirPro News analysis
Frequently Asked Questions (FAQ)
How many F-35s is Japan buying?
What makes the F-35B different?
Why are Japan’s carrier-capable ships called destroyers?
Photo Credit: Lockheed Martin
Defense & Military
GKN Aerospace Delivers First Upgraded RM12 Engine to Swedish Armed Forces
GKN Aerospace delivers the first upgraded RM12 engine under a £32 million programme enhancing Sweden’s Gripen C/D fighter fleet performance and endurance.
This article is based on an official press release from GKN Aerospace.
GKN Aerospace has officially delivered the first upgraded RM12 engine to the Swedish Armed Forces, marking a critical milestone in the RM12 Enhanced Performance (RM12EP) programme. The delivery is part of a broader initiative to modernize the propulsion systems of Sweden’s JAS 39 Gripen C/D fighter fleet.
According to a company press release, the RM12EP programme is valued at approximately £32 million (SEK 400 million). The initiative focuses on increasing engine thrust, extending operational endurance, and improving overall efficiency to ensure the legacy fighter aircraft remain highly capable in modern operational environments.
The successful handover of the first enhanced engine underscores GKN Aerospace’s nearly century-long partnership with the Swedish Air Force. As the type certificate holder for the RM12 engine, the company continues to play a central role in maintaining Sweden’s aerial defense readiness.
The RM12EP upgrade introduces significant technical improvements to the existing powerplants. In its official statement, GKN Aerospace noted that the enhancements include the installation of improved turbine hardware alongside updated engine control software. These modifications are specifically designed to boost engine thrust and extend the operating time of the engines, while simultaneously reducing life cycle costs for the Swedish Armed Forces.
The RM12EP programme was originally launched in 2019. It represents a long-term strategic effort led by GKN Aerospace to ensure that the Gripen C/D remains a cost-efficient and highly capable platform, even as newer generations of fighter aircraft enter service.
All upgrade work for the RM12 engines is being conducted at GKN Aerospace’s specialized facility in Trollhättan, Sweden. The company maintains comprehensive responsibility for the development, manufacturing, system support, and maintenance of both the RM12 engine, which powers the Gripen C/D, and the newer RM16 engine, which is utilized in the advanced Gripen E/F models.
The delivery of the first upgraded unit was achieved through extensive cross-functional collaboration. GKN Aerospace highlighted that the milestone involved coordination across engineering, production, quality assurance, procurement, and logistics departments. Furthermore, the project relies on key partnerships with industry leaders GE and Saab. Additional upgraded engines are scheduled to be delivered continuously to the Swedish Armed Forces in accordance with the programme’s planned timeline. “This first upgraded engine delivery represents an important step forward in enhancing the performance and endurance of the Gripen system. As type certificate holder for the Gripen C/D engine and with a partnership with the Swedish Air Force that spans nearly a century, we are proud to continue supporting Sweden’s operational capability and future readiness.”
We note that the delivery of the first upgraded RM12 engine highlights a broader trend in global defense procurement: the necessity of extending the operational lifespan of proven legacy platforms. While the Swedish Air Force is actively transitioning to the next-generation Gripen E/F, maintaining a robust and capable fleet of Gripen C/D aircraft remains essential for national security and regional stability.
By investing £32 million into the RM12EP programme, Sweden is ensuring a cost-effective bridge between aircraft generations. The enhancements to thrust and endurance not only improve the tactical capabilities of the Gripen C/D but also optimize maintenance schedules and reduce long-term operational costs. This dual-track approach, upgrading existing assets while procuring new ones, allows the Swedish Armed Forces to maintain a high state of readiness without compromising on technological advancement.
Furthermore, keeping the upgrade work localized at the Trollhättan facility secures domestic aerospace expertise and supply chain resilience. As geopolitical tensions in Europe remain a focal point for defense ministries, the ability to independently maintain and upgrade critical defense infrastructure is a significant strategic advantage for Sweden.
The RM12 Enhanced Performance (RM12EP) programme is an upgrade initiative led by GKN Aerospace for the Swedish Armed Forces. Launched in 2019, it aims to improve the thrust, endurance, and efficiency of the RM12 engines powering the JAS 39 Gripen C/D fighter aircraft.
According to GKN Aerospace, the programme is valued at approximately £32 million, which equates to SEK 400 million.
All development, manufacturing, and maintenance work for the RM12 engine upgrades is carried out at GKN Aerospace’s facility in Trollhättan, Sweden.
The RM12EP programme involves strong collaboration between GKN Aerospace and key industry partners, including GE and Saab.
The RM12EP Upgrade Programme
Technical Enhancements
Production and Partnerships
Strategic Implications for the Swedish Air Force
AirPro News analysis
Frequently Asked Questions
What is the RM12EP programme?
How much is the RM12EP programme worth?
Where is the upgrade work being performed?
Who are the key partners in this programme?
Sources
Photo Credit: GKN Aerospace
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