Warren Buffett may be most famous for the billions of dollars he has made from investing but he is also well known as a cheerleader for the United States.

President Barack Obama used his annual State of the Union policy address to denounce America’s economic inequality, drawing a battle line with Republicans ahead of what is expected to be a tough fight for re-election.

Billionaire investor Ron Burkle is working with a union representing workers at Dow Jones & Co to explore alternatives to Rupert Murdoch's $5bn (€3.69bn) bid for the company, which publishes The Wall Street Journal.