A Swiss Army helicopter patrols over the city of Davos during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. Show moreShow less
A Congress Centre and the town of Davos are pictured during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018.Show moreShow less
A Congress Centre and the town of Davos are pictured during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. Show moreShow less
A Congress Hall and the town of Davos are pictured during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. REUTERS/Denis BalibouseShow moreShow less
A staff member is seen during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. Show moreShow less
Attendees arrive for the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. Show moreShow less
A Swiss Army helicopter patrols over the city of Davos during the World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 23, 2018. Show moreShow less