a few hundred million dollars, prokhorov recently bought 80% of the worst team in the national basketball associationears ago, a russian would have never been allowed to buy an american sports franchise, but n.b.a. commissioner david stern says its just one more sign that the world is changing. >> david stern: america is really the only place where the question gets asked, "what about those foreigners?" this is a global sport. our games are televised in 215 countries and 43 languages. so it was really a natural import of globalization. >> kroft: it also has something to do with the recession. a number of n.b.a. teams are struggling financially, and prokhorov has the one thing the league and the nets need most right now-- very deep pockets, which come from a far-flung financial empire. he flew us to siberia to check out russia's richest gold mining company. he owns almost half of it, plus a big chunk of the world's biggest aluminum producer. there is a media empire, plus two banks, an insurance company, and lots of real estate, including this house, which has a built-in swimming pool and, of course, a