Yes, but in reality nobody is going to nuke anybody, and certainly not because a random internet user vents their frustration at the situation with a clearly metaphorical and exaggerated request. Your reply was an overly literal reading of the comment, like replying to "go fuck yourself" with "...you realize that's not possible, right?"
I simply replied to your literal interpretation with a literal interpretation of my own.
No, they can return after the country has been glassed.