Outstanding investigative work on the rise of a "desire" war European nations (as it is indeed a war of desire that slowly matures at the end of 19 e century) in a context of generalized imperialism (the colonial times and many countries extension of wills), commercialism (including Great Britain is challenged leader and ensures preserve certain monopolies), exacerbated by public opinion and the media their "va-t-en-war" makers of paranoid nationalism and globalization encouraged by the vital international trade and power industry. This is reminiscent of times today that we can analyze emotions according to sequence> motivations> attitudes> behavior. In an atmosphere of emotions all irrational (even racist nationalist impulses), peoples and their elites found themselves good reasons to justify acts (motives) even the most foolish and that would begin the destruction of our civilization, adopted attitudes (predispositions to act) excessive and irresponsible bragging and finally let themselves go with behaviors "somnambulistic": a way to start and act unconsciously .And that is what Christopher ClarK described in step pas.Il enough to an event in Sarajevo that triggers a cataclysm which all had the desire without actually knowing the raison.Clark shows how this scenario is built by telling us Serbia and its irredentism and the divisions of the continent and its actors, the dynasties of another century, old rickety empires such as Austria-Hungary and the Ottomans, the murky and ambiguous or incompetent politicians, the usual journalists living in the emotions goodwill, the versatile peoples etc..Il enough of a match for triggering a disaster that causes the étonnement.Ce still fascinating book reads like a thriller.