Investigation leads to allegations of extensive tax evasion.
The former Fed Chairman, Alan Greenspan, says a Greek eurozone exit is now inevitable.
The latest business and finance news from around the world, on the BBC.
Peter Day explores the future of money and digital currencies
Processing the world's trash heap is big business, worth 400 bn dollars. But can it last?
Nigerian youth unemployment and falling oil prices are key issues.
Nigerian youth unemployment and falling oil prices are key issues
The creator of PGP email encryption says we're in a golden age of surveillance for spies
Will governments take advantage of the falling oil price to cut fuel subsidies?
Greece's new finance minister urges Germany to help end the Greek debt crisis.