Switzerland's Simonetta Sommaruga, right, Federal councillor for the Environment, Transport, Energy and Communications shakes hands with China's Xie Zhenhua, left, Special Envoy for Climate Change during a bilateral meeting at the house of Switzerland on the sidelines of the 51st annual meeting of the World Economic Forum, WEF, in Davos, Switzerland, on Sunday, May 22, 2022. (Laurent Gillieron/Keystone via AP)