I see. The "American" attitude is that it's moral to obliterate civilians, fund death squads, torture prisoners, and overturn democratically elected governments as long as it's the US government (or it's contractor) that does so. But it's highly immoral for others to do so. What an arrogant position to take. This is what makes Americans so disliked in many parts of the world. I would suggest that those Americans retiring overseas think twice about it and even if they do to invest in tall fences, dogs, and guards (and make sure that the guards are well paid).
As for "John Galt", I guess that his opinion of the morality of somebody like al Qaeda running planes into the World Trade Center was that it was ok. I mean "There are too many people anyway. A few less won't matter."