President Bush is most responsible for the ISIS deluge. The Obama administration has played a malign, but secondary, role. Like its predecessor, it also intervened too much rather than too little. For instance, President Obama continued to back Iraq's Maliki government despite the latter's sectarian excesses.
As nationalism may seduce the masses, so may vanity have the same effect upon individual diplomats engaged in conflict resolution. While some may debate what strategic interests, conspiracies or prejudices are at play in motivating policy, too frequently it may be the egos of the personalities involved.
Whether there was acquiescence or complicity before or after the fact of the fall of Srebrenica, Washington pivoted its policy toward satisfying Milosevic's territorial demands. The mythology of peace in BiH continues to be dominated by tales of age-old hatreds as well as ethnic chauvinist politics.