Boris Berezovsky: Colorful Russian oligarch

Boris Berezovsky began his working life as a math professor, and then a systems analyst, before switching to more lucrative jobs, according to CNN's Jill Dougherty. He is pictured here at Moscow airport in 1999.

Boris Berezovsky began his working life as a math professor, and then a systems analyst, before switching to more lucrative jobs, according to CNN's Jill Dougherty. He is pictured here at Moscow airport in 1999.