...putting aside this and other documented photos showing this man to have serious health issues of late, one has to consider his lifestyle and the degree of stress (much self-imposed) for a person this age. He does not handle things that don't go his way in the hypertension side of things, to put it mildly. So the ole saying of "burning the candle both ends"...it's most likely catching up to him sooner than later, IMO.
This is not to say he'll croak tomorrow, it's just not looking good for him currently. Nor would I be surprised if his fanatical advisors try to pull a Weekend at Bernie's if he does suddenly croak... >.<