World Economic Forum begins in Davos

A Swiss special policeman patrols on a roof before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A Swiss special policeman patrols on a roof before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A bus drives past the entrance of the congress centre for the annual meeting of the World Economic Forum (WEF) 2014 in the early morning in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

An overview shows the congress centre for the annual meeting of the World Economic Forum.

A barbed wire fence is seen in front of the InterContinental Hotel before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A Swiss special police man patrols on a roof before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A Swiss special policeman patrols on a roof before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A police car patrols in front of the InterContinental Hotel before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.

A technician checks the light in the Congress Hall before the start of the annual meeting of the World Economic Forum (WEF) 2014 in Davos January 21, 2014. The annual Davos gathering, which draws thousands of the world's most powerful people, will this year welcome more than 40 heads of state and government to focus on questions about the world's future, organisers said on Wednesday. This year's event will run from Jan 22 to 25.