Peter Thomson, outgoing President of the 71st Session of the...

UN HEADQUARTERS, NEW YORK, NY, UNITED STATES - 2017/09/08: Peter Thomson, outgoing President of the 71st Session of the United Nations General Assembly, delivered a final press briefing at UN Headquarters, summarizing what he saw were the key accomplishments of the Assembly during his tenure and providing an overview of new and remaining challenges facing the UN as it prepares for the start of 72nd General Assembly on September 12th. (Photo by Albin Lohr-Jones/Pacific Press/LightRocket via Getty Images)