William Lacy Swing (L front), Director General of the International Organization of Migration (IOM) signs the agreement with United Nations Secretary-General Ban Ki-moon(R front) as IOM officially joined the UN during the United Nations High-level plenary meeting on addressing large movements of refugees and migrants, at the UN headquarters in New York, the United States, on Sept. 19, 2016. U.N. Secretary-General Ban Ki-moon on Monday called for more collective efforts to address the challenge of human mobility, saying that "acting together, we can respond to rising xenophobia and turn fear into hope." (Xinhua/Li Muzi)
