UN envoy arrives in Yemen's capital to accompany Houthi rebel delegation to Sweden

A convoy of the United Nations Envoy to Yemen Martin Griffiths leaves the Sanaa International Airport in Sanaa, capital of Yemen, on Dec. 3, 2018. Martin Griffiths arrived in Yemen's rebel-held capital Sanaa on Monday, in a brief stop to get Houthi delegates to Sweden. (Xinhua/Mohammed Mohammed)