Rusty Dagger cruise missile at centre of possible USD825 million ERAM sale to Ukraine

Zone 5 Technologies' ERAM offering is based on its Rusty Dagger air-launched cruise missile, 3,350 of which were named in an August 2025 FMS for Ukraine. (Zone 5 Technologies)

The US Department of State approved a possible Foreign Military Sale (FMS) of as many as 3,350 Extended Range Attack Munition (ERAM) missiles to Ukraine on 28 August.

In addition to the missiles, the FMS includes up to 3,350 Embedded GPS/Inertial Navigation System (INS) modules. It may also include Selective Availability Anti-Spoofing Modules (SAASMs) able to access more precise and encrypted Y-Code or M-Code GPS signals.

Ancillary items such as missile containers, launch pylons, spares, support, software, and training will also be included.

Funding for the purchase is being provided by Denmark, the Netherlands, and Norway and Foreign Military Financing from the United States. The US Department of Defense's (DoD's) Defense Security Cooperation Agency said in the notice announcing the FMS, “The ERAM is an example of working together with our NATO allies to develop a capable and scalable system capable of being delivered on a fast timeline.”

ERAM dagger

President of US company Zone 5 Technologies Kyle Maxhimer told Janes on 29 August that it was the primary vendor for ERAM and its Rusty Dagger air-launched cruise missile was the base platform for it, differing only with some customer-driven variations that may affect things like range.

Rusty Dagger, called an Open Weapon Platform by Zone 5 Technologies, has multiple launch options and a pyro-free engine start. It has a 926+ km range at a high subsonic cruise speed with terrain following autonomous navigation and uses tactical terminal manoeuvres before a high-energy precision strike, according to the company.