Aides tell Politico that former Vice President Dick Cheney's repeated attacks on the current occupant of the Oval Office come because of his genuine concern for Barack Obama's foreign policy choices. One adviser thinks Cheney has altered the course of American policy through his withering critiques. “You’ve seen the American people have a much better understanding of what the different policy choices are and were than they would have if he hadn’t been speaking out. It’s forced the Obama administration to be much more rigorous in defending its own policy decisions and choices,” the adviser said. Such an approach has its drawbacks. By entering the fray, Cheney loses the aura that usually surrounds officials who have left office. Cheney appears on ABC's This Week Sunday morning for an exclusive interview.