Nigerien Prime Minister Brigi Rafini speaks at an event celebrating the 20th anniversary of the World Day to Combat Desertification and Drought at the headquarters of World Bank in Washington D.C., the United States, on June 17, 2014. Ms. Monique Barbut, Executive Secretary of United Nations Convention to Combat Desertification (UNCCD) on Tuesday called on the world to pay more attention to land management to adapt to the effect of climate change at the event. (Xinhua/Yin Bogu)
