Why put the money into original R&D when you can ‘acquire’ someone elses R&D for way less money, time and effort.
Looks like more a plywood Iranian 5th gen fighter ‘prototype’ than any functional missile.
How does something like that “fly” horizontally? How does it get lift? Does it fly in a nose up attitude with a partial vertical thrust component?
The next world war will be over quickly. The US needs a few billion and 5 to 8 years now to catch up.