The subtext of Obama's speech is that he can be exempt from the constraints of moral leadership implicit in the receipt of the Nobel Prize and still use it as a political marketing tool. But it doesn't work that way.
What better way for Obama to begin his labors of peace on the world stage than by impaneling a Truth Commission to investigate the wrongdoings of the Bush administration regarding their pre-emptive war with Iraq?
This was really Obama at his best -- candid, realistic, passionate, idealistic and level-headed. This is probably the closest thing we have to a personal articulation of Obama's fundamental beliefs about America's role in the world.