Earlier quoted context omitted.
The University of Tokyo could afford to do that because another nation had taken over responsibility for their defense. Who's going to be that protector for the US?
The US doesn't need a protector, because the US has immensely large natural barriers (the Atlantic Ocean and the Pacific Ocean) that protect it from any other country in the world, except from Canada and from Mexico. Unless you think one of these two countries is an actual threat to the US, then I think in general you should be safe. Now, obviously, there are intercontinental missiles, but why would anyone employ the…
And if the US was willing to cut itself off from the rest of the world, this might be relevant.
But I don't think that's the case.
> Now, obviously, there are intercontinental missiles, but why would anyone employ these against a nation if they would not consider that nation a threat?
Um. I can think of a ton of reasons? From "they're not a threat now but give them 5 years to retool and they'll be really fucking irritating to deal with" to "they keep providing military and tech support to countries on our borders we want to omnomnom" or even "this will help with domestic political issues".
"Don't bother hurting me, I'm defenceless" works when there's a cop standing over your shoulder. Not so much when you used to be the cop.