The only invasions these people are worried about is Ukraine and Taiwan.
Taiwan is essential to the defense of all our Pacific allies, and the United States.
Oh but I know that’s just neocon craziness. We can just surrender more and more of the world to our violent enemies (and they are very clear that they are our enemies) and everything will be just fine. Not.
The world doesn’t work that way, and never has.
You live in quite the imaginary world - but that doesn’t change the fact the real world very much still exists.