Denmark Eyes 200 JASSM-ER Missiles to Give Its F-35s Long-Range Strike Reach

Denmark is moving to add a major long-range strike capability to its future F-35A fleet after the United States approved a possible $842 million Foreign Military Sale covering 200 AGM-158 Joint Air-to-Surface Standoff Missiles with Extended Range, better known as JASSM-ER.

The approval, announced by the U.S. State Department and notified to Congress through the Defense Security Cooperation Agency, would provide Denmark with one of the most important air-launched strike weapons available to NATO fighter operators. The package includes 200 JASSM-ER missiles, missile containers, training and support equipment, spare parts, software, technical documentation and contractor support services. Lockheed Martin is listed as the principal contractor.

The deal is not yet a signed contract. Foreign Military Sale notifications are a required step in the U.S. arms export process and indicate that Washington has approved the potential sale. Final quantities, cost and delivery timelines can still change before a contract is concluded.

If completed, however, the acquisition would significantly expand the Royal Danish Air Force’s strike reach. Denmark operates the F-35A, and the JASSM-ER would allow Danish aircraft to hit high-value targets from far outside the reach of many air-defense systems. The missile has a range of more than 900 kilometers, giving even a relatively small air force the ability to hold strategic targets at risk from stand-off distance.

That range is the key point. The F-35 already gives Denmark stealth, advanced sensors and strong interoperability with the United States and NATO. But with JASSM-ER, the aircraft becomes more than a fighter designed for air defence or tactical strike. It becomes a platform capable of launching deep precision attacks against command centers, air-defense nodes, logistics hubs, hardened infrastructure and other high-value targets without having to fly directly over them.

The JASSM-ER is a stealthy air-launched cruise missile designed to penetrate defended airspace. It uses a combination of inertial navigation, GPS updates and terminal guidance to find and strike its target. The missile carries a penetrating warhead, allowing it to attack hardened or protected targets that would be difficult to neutralize with lighter munitions.

For Denmark, the weapon fits into a wider NATO trend. European F-35 operators are increasingly looking at long-range precision weapons as Russia’s war against Ukraine has reinforced the importance of stand-off strike, survivable airpower and the ability to suppress or destroy enemy air-defense networks. Finland and Poland already operate JASSM-family missiles, while other European F-35 operators including Italy, the Netherlands and Germany have also moved toward the capability.

The sale would also improve Denmark’s interoperability with U.S. forces and other NATO allies. JASSM-ER is a key American long-range strike weapon, and integrating it into Denmark’s F-35 fleet would allow Danish aircraft to participate more effectively in allied strike packages, deterrence missions and high-end air operations.

The timing is also important for Denmark’s own defence posture. Copenhagen has been strengthening its airpower and wider defence capabilities as the Arctic, Baltic Sea and North Atlantic become more strategically sensitive. Denmark’s responsibilities include the defence of its own airspace, support to NATO operations and a growing focus on the security environment around Greenland and the High North.

A JASSM-ER-equipped F-35 fleet would give Denmark far more reach in these theatres. From bases in Denmark or forward positions elsewhere in NATO territory, Danish aircraft could threaten targets at long range while remaining outside many surface-to-air missile engagement zones. That kind of capability is especially valuable in a crisis where NATO may need to deter escalation without immediately committing large numbers of aircraft deep into contested airspace.

The acquisition also reflects a broader shift in European air forces. For years, many smaller NATO members focused primarily on air policing, short-range strike and coalition support roles. The spread of F-35s and long-range missiles is changing that. Countries that previously had limited deep-strike capacity are now acquiring weapons that can contribute directly to theatre-level deterrence.

This does not mean Denmark is becoming a strategic strike power on the scale of the United States. But it does mean the Royal Danish Air Force could gain an ability that was once limited to much larger air forces: launching stealthy precision cruise missiles from tactical aircraft against targets hundreds of kilometers away.

The political message is equally clear. Washington’s approval signals continued U.S. support for arming European allies with advanced long-range weapons at a time when NATO is trying to strengthen deterrence on its northern and eastern flanks. It also gives Denmark a deeper role inside the F-35 weapons ecosystem, making its future fighter fleet more relevant in high-end NATO planning.

The package will still need to move through the remaining steps of the Foreign Military Sales process. But if finalized, the JASSM-ER purchase would become one of Denmark’s most important airpower upgrades in years.

For Copenhagen, the F-35 provides the platform. JASSM-ER would provide the reach.