Michael Anker Lollesgaard (C) arrives at Sanaa International Airport, in Sanaa, Yemen, on Feb. 5, 2019. Michael Anker Lollesgaard of Denmark, the newly-appointed head of the United Nations mission to monitor a truce agreement, arrived on Tuesday in Yemen's rebel-held capital Sanaa. He was set to travel from Sanaa to the country's Red Sea port city of Hodeidah to assume his duty. (Xinhua/Mohammed Mohammed)