CNN Erin Burnett OutFront June 14, 2013 03:17:00
>> reporter: there's been all sorts of rumors throughout the years, erin, about his health, that he's sick, that he has cancer, but he's been motoring along and he appears healthy when he makes public appearances. he looks healthy, energetic. his aides says he exercises, hikes often, but he is getting up in age. he is 73 years old. it's possible the next president who is elected, especially if he serves eight years, could be in power when the supreme leader passes. many say that's going to be a critical transition, maybe the most critical in the history of the islamic republic, erin? >> certai...