Gurugram: A delegation from Haryana, headed by Environment, Forest, and Wildlife Minister Rao Narbir Singh, has left for the 16th Conference of the Parties (COP-16) to the United Nations Convention to Combat Desertification (UNCCD) in Riyadh, Saudi Arabia, which runs from December 2 to 13. The delegation also includes Anand Mohan Sharan, Additional Chief Secretary.