The missile, intended to replace both the AMRAAM air-to-air missile and the HARM air-to-ground missile has been dropped from the Pentagon budget:

The US Air Force has cancelled the next generation missile (NGM) meant to replace both the anti-air AIM-120 AMRAAM and the anti-radiation AGM-88 HARM, both mainstays of the USA and its international allies.

The NGM programme, also formerly known as the joint dual-role air dominance missile and projected to cost up to $15 billion, was cancelled “for affordability reasons”, according to Gen Edward Bolton, USAF chief budget officer.

This is unsurprising.

In order to achieve what are almost diametrically opposed roles, the AMRAAM is a 7″ diameter missile which is designed to take a lofted trajectory to maximize range, and the HARM is A 10″ diameter missile which takes a direct route to the target to minimize time to target, you have to develop a whole series quantum leaps in propulsion and lethality, and gets the entire weapons system onto the cost escalation-schedule slippage hamster wheel.

It’s a good thing that this is canceled.