Jimmy Carter in yesterday's New York Times. A voice of reason and integrity.
It's conceivable that President Obama could go on to work for peace and justice after leaving office - concepts that are currently less of a priority in his foreign policy. Further evidence that the job has an effect on its occupant and encourages the preservation of the post-1945 patterns of US aggression.
http://www.nytimes.com/2012/06/25/opinion/americas-shameful-human-rights-record.html