Also, I don't want to come off as a cultural absolutist, I think other countries can have different cultures than standard western; but conquering and imposing culture with violence does not respect basic humanity. Also, we should be able to defend and evolve every culture with peaceful discussion, communication and schooling instead of bombs; and even incorporate other cultures as we see fit (this is a big theme here in Brazil related to our modern art week :) ).
Ideally, yes. But democratic countries have a fatal flaw that we don't really have a good solution for, democracy can vote itself out of existence to be replaced with fascism and the only way to reset it that we know about is through war. This is a real problem.
Seconded, in fact I would suggest every read it and re-read it every decade or two or so.