I 100% disagree. A very good example is the EU. You look at their history and was nothing but wars and hatred amongst neighbors. Look at them now. And that's just a glimpse as their economic unity has not been perfected yet. But it will. And once the whole world unites into a world federation, priorities will also change from spending time hating your neighbor, or to get more "stuff" than he has, into spending time bettering ourselves.
"When fascism comes to America, it will be wrapped in the flag and carrying a cross." - Sinclair Lewis
"Those Who Would Sacrifice Liberty for Security Deserve Neither." -Benjamin Franklin