I won't deny that CIA (and let's be honest, other secret services) has a very bad record about that.
It means we have a duty to elect government which will rein in such secret services. It DOESN'T mean the rest of the world has suddendly lost agency and we become responsible for it all.
Or if you consider that the West should basically manage the world, bring back colonisation and enjoy your self-contradictions.
So what ? Why would other countries have an OBLIGATION to take people from elsewhere in ? It's each group choice to accept newcomers.
Well, you're wrong about every single thing you just wrote in this part. As you didn't bother to provide any arguments, I won't bother to provide any counters.
Not that I would need to anyway, the "nation" word exists for a reason, and it's not because some random guy on Internet said that it didn't exists that reality suddendly has to oblige.