Don't be ridiculous. Arguments like this just provide aggressors with a bigger ratchet - it incentivizes them to seize the initiative and hurt others, then insist on mutuality to escape retaliation. Tit-for-tat is well established by game theory as a sound policy for dealing with malicious actors.
It's not a prisoners dilemna because you also lose by defecting while everyone else is cooperating.
The thing to recognize and internalize is that the world is a lot more win-win than our psychology has been evolved to recognize. Nationalism, realpolitik, xenophobia - all of these are ideologies that make you poorer and worse off, not giving you some secret insight into the truth of human nature.
Everyone else is not cooperating though. Just because you think nationalism, realpolitik, and xenophobia (and slave labor, for that matter!) are all bad things that one shouldn't partake in, doesn't mean the rest of the world feels the same way, such that they will extend you the same courtesy.
My country is now doing badly just because an impressive gathering of idiots from across the Atlantic voted for an egotistical maniac.
I do not care about turning the other cheek, I want him gone. This will not get fixed until Americans understand that fascism only leads to ruins and suffering.
