Leonardo DiCaprio, Hollywood actor, second left, Hilda Schwab, chairperson and co-founder of the World Economic Forum (WEF), center left, Klaus Schwab, chairman of the World Economic Forum (WEF), center right, and U.S. Vice President Joseph "Joe" Biden, right, attend a plenary session ahead of the World Economic Forum in Davos, Switzerland, on Tuesday, Jan. 19, 2016. World leaders, influential executives, bankers and policy makers attend the 46th annual meeting of the World Economic Forum in Davos from Jan. 20 - 23. Photographer: Matthew Lloyd/Bloomberg via Getty Images
