I don't think nationalism is alone holding the field it's in contention with a lot of different things.
You might hold an ethical position that it's wrong to lie but if you have...
But the wicked passions of men's hearts alone seem strong enough to leave...
A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of idea.