Navel Defense? Missile Shields? Good luck with that....

They would be better off building bunkers that can house millions of people for the population to retreat into (at least in Cities). Is the US Military that inept that they don't see what war has become? It's basically streaming live from Ukraine.

If there is one thing I have noticed is that big military powers can be stopped and exhausted by much smaller countries using off the shelf tech. America still needs to learn that lesson and Iran might be the place where it happens....