From the Beeb:
A man of extraordinary drive and energy and with a colourful lifestyle, he was once memorably described as an "Arab Gatsby".
He played a central role in building the special relationship between Riyadh and Washington, a task that has become significantly harder since the 11 September 2001 attacks.
Known to be in poor health, there has been speculation for some time that he wanted to leave his post.
If the ailing Saudi King Fahd were to die, it is expected that Crown Prince Abdullah would become king and Prince Bandar's father, Prince Sultan, the current defence minister, would become crown prince.
Prince Bandar may wish to position himself for a new role in the post-Fahd era.... or he may just want to get the hell outta Dodge before the Ponzi scheme that is the Bush Admininstration comes crumbling down.
read the rest at:
http://news.bbc.co.uk/2/hi/middle_east/4633537.stm