According to the elite newspapers and journals of opinion, the future of
 foreign affairs mainly rests on ideas: the moral impetus for 
humanitarian intervention, the various theories governing exchange rates
 and debt rebalancing necessary to fix Europe, the rise of 
cosmopolitanism alongside the stubborn vibrancy of nationalism in East Asia
 and so on. In other words, the world of the future can be engineered 
and defined based on doctoral theses. And to a certain extent this may 
be true. As the 20th century showed us, ideologies -- whether communism,
 fascism or humanism -- matter and matter greatly.