Even if so, it's a poor course of action to invite the defending leader to a talk, and ask publicly for his unconditional surrender _under a threat and praising of the invader_
US most certainly has anti ballistic missile tech, however wasting exposing it on Russia is something that is not worth it when there are more capable nations on the line.
Russia is special. They're a sophisticated adversary with a drastically different warfighting doctrine. They still optimize airframes for dogfighting, are laser-focused on hypersonic tech, and we don't officially know how good their missile defense is (probably excellent, or at least good enough to be dangerous, which is a bit of a theme).
They have a much lower defense budget, and have been forced to actually be creative and clever about problems, as opposed to our throw-money-at-problem-ergo-win approach.
tl;dr Russia is not a fun opponent, and they culturally really enjoy statecraft so best to stick with statecraft.
>and we don't officially know how good their missile defense is
we do know. Its mediocre at best.
The thing about Russia that most people don't get is that even before all of this happened, there was no money to be made in terms of talent for stuff that requires engineering. Everyone who was smart was leaving the country so they could make much better salaries elsewhere.
They are a full scale paper tiger, none of their stuff even from cold war era is as good as the propaganda claimed.
The Russian planes true stealth metrics are never going to get published. Russia will exaggerate it, US will never reveal that it can be actually detected. Russia had their latest fighter at the Chinese air show, and it was FAR from stealth.
Sure there is a 0.1% chance it may be able to hold 2 circle or one circle against F22, considering that no F22 has ever flown publicly within its full maneuverability envelope, but it sure as shit would lose to the flying supercomputer that is the F35 because BVR missiles that are smart enough to avoid countermeasures are a thing now. Some even use optical tracking.
As far as ICBM defense goes, we did this back in 2002:
Therefore, ending the war as soon as possible is the moral thing to do.