Swiss armed security personnel stand guard on the rooftop of a hotel, next to letters covered in snow reading "Davos", near the Congress Centre on the opening day of the World Economic Forum (WEF) 2018 annual summit, on January 23, 2018 in Davos, eastern Switzerland. After spectacular snowfall that stranded high-flying delegates on their way to Davos, the World Economic Forum starts in earnest on January 23 basking in robust global growth but facing warnings that the world's have-nots are missing out more than ever. / AFP PHOTO / Fabrice COFFRINI