Convoy of the UN Special Envoy to Yemen Martin Griffiths leave the Sanaa International Airport following his arrival in Sanaa, Yemen, on Feb. 26, 2019. UN Special Envoy to Yemen Martin Griffiths arrived on Tuesday in the rebel-held capital Sanaa to push Houthis to withdraw from Hodeidah ports in line with Stockholm Agreement. Griffiths was set to meet Abdulmalik al-Houthi, leader of Houthi group, the rebel-run al-Masirah TV reported. (Xinhua/Mohammed Mohammed)