In the long run, I expect Germany to survive, but I'm not making the same bet on the US. I'm planning on moving from the US to Ireland at some point; I don't really want to be here, or to make my children be here, for the chaos almost certain to ensue 40-50 years from now. (Or 10-20 years from now, if we end up with President The Donald and he keeps his campaign promises.)
As The Economist put it, America has "friends to the north and south and fish to the east and west." If anything truly threatens the US, it is ourselves. The idea that anyone could sustain supply lines to invade the States is out of their mind or has fallen asleep too many times to reruns of Red Dawn.
I think there's a Nova episode about all this.
It's almost as if some Germans are so ashamed of their national past that they would rather see nationalism eliminated entirely than to accept the messy world as it is.
Ironically, I am now realizing how much of a burden that ideology is being forced on much of Europe, not necessarily the same way that the Nazis conquered Europe, but in the same insistence that they are ultimately right.
What's always rather surprised me though is that no one seems to have realized that the decades of collective shaming of Germans for having gone through the national socialist dictatorship and war, has led to a deeply lost and self-loathing society without pride, dignity, or healthy identity. The society is in rather advanced stages self-destruction and decomstruction. The question is really only whether German culture and society will at all survive it's suicidal tendencies.