This was announced in early April by the Dutch State Secretary Christophe van der Matt.
The JASSM (Joint Air-to-Surface Standoff Missile) is a conventional, stealthy, air-launched ground attack cruise missile designed for the U.S. Air Force and international partners. An extended range version, AGM-158B JASSM-ER, was developed alongside the standard variant, and went into service in 2014.
The standard JASSM has a range of 370 km, whereas the JASSM-ER has a range of approximately 1,000 km.
Both variants measure 4.26 m long, 0.55 m in diameter, 0.45 m in height, 2.7 m in extended wingspan, and 1,023 kg in launch weight. The JASSM carries a 432 kg class WDU-42/B penetration and blast fragmentation type warhead.
JASSM-ER missiles are produced by American defence giant Lockheed Martin.