Ban Ki-moon is a South Korean diplomat who was the eighth Secretary-General of the United Nations (UNSG) from January 2007 to December 2016. Before becoming UNSG, Mr Ban was a career diplomat in South Korea’s Ministry of Foreign Affairs and in the United Nations. As the eighth UNSG, Ban Ki-moon's priorities were to mobilize world leaders around a set of new global challenges, from climate change and economic upheaval to pandemics and increasing pressures involving food, energy, and