Spain's Prime Minister Pedro Sanchez speaks during a press conference following a Conference of Regional Presidents on the evolution of the Covid-19 pandemic, at the Spanish Senate in Madrid, on December 22, 2021. - Sanchez met via video with regional leaders to discuss ways to reduce the spread of the Omicron variant first identified in southern Africa late last month. Spain will reimpose a nationwide rule requiring the use of face masks outdoors, the government said on December 22, 2021, as the country grapples with a spike in Covid-19 infections. (Photo by JAVIER SORIANO / AFP)