it's not sad, it's a good news. The EU was only about trade regulations, nobody is thinking that we are EU but only think I'm French, I'm German, etc. How do you want that this is working? US have done nothing special, they only use the same money, and it's still splitted in "nation" then it's the same, different rules, different culture (rage against Spanish in some state, rage against black in other). We are not united, we are all alone in this war. When people will start to say "I'm a citizen of the world" and stop thinking that they are "French, US, etc." maybe the world will go better.