The Bass Family and the Bush family go back a long ways...
Robert Bass was one of President Bush's Team 100 members. I think he also invested in the Rangers when that deal was put together.... Also you'll find lots of 'tin foil' stuff with several oil investments involving the President.
Heck when you are a billionaire you have to invest in something.
That still doesn't make him a partner with the Sultan, unless the AP got the facts wrong.