Is there a way for President Obama to pursue that responsibility without inflicting vengeance or humiliation? Perhaps he ought to consider the creation of a presidential commission whose aims would be purely investigative -- and encourage the participation of those implicated in the abuses of the past by promising a complete pardon to anyone who testifies fully, honestly and publicly.
With that gesture, he would acknowledge the importance of uncovering the facts, no matter how ugly, while magnanimously binding up the nation's wounds. He could leave the issue of criminal prosecution to international authorities that can act without any partisan taint. And he could seek truth without vengeance.
Fully. Honestly. Indeed. Translate "fully" as: "in the manner desired" and "honestly" as: "if it contributes significantly to the inflatation of the predetermined outcome."