World’s elite wind up WEF meeting in Davos

United Nations Secretary-General Ban Ki-moon speaks during a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014.

Microsoft founder Bill Gates attends a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014.

Singer Bono.

Carlos Ghosn, chairman and chief executive of Renault-Nissan Alliance, attends a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014.

Britain's Prime Minister David Cameron speaks during a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014. Cameron told the World Economic Forum in Davos on Friday he was confident he could renegotiate his country's relations with the European Union to allow it to remain in the 28-nation bloc. "I'm confident that we'll have a successful renegotiation and a successful referendum," he told delegates, referring to his plan to reshape his country's EU ties before offering Britons an in/out referendum if he is re-elected next year.

Brazil's President Dilma Rousseff speaks during a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014.

Mexico's President Enrique Pena Nieto speaks during a session at the annual meeting of the World Economic Forum (WEF) in Davos January 23, 2014.

European Central Bank (ECB) President Mario Draghi attends a session at the annual meeting of the World Economic Forum (WEF) in Davos January 24, 2014.

Arianna Huffington, president and Editor-in-Chief of The Huffington Post Media Group attends a session at the World Economic Forum (WEF) in Davos January 25, 2014.