ADEN, Yemen, Jan. 6 (Xinhua) -- United Nations Special Envoy to Yemen Hans Grundberg arrived in the Yemeni capital Sanaa on Monday, marking his first visit in nearly two years as part of efforts to push forward the stalled peace process.
A source at Sanaa International Airport told Xinhua that Grundberg, who landed on a UN plane with a team of assistants, was received by Houthi officials and left the airport sho
