Karel van Oosterom (L), Dutch Ambassador to the United Nations and President of the UN Security Council for the month of March, talks with the UK Ambassador to the United Nations Jonathan Allen after a Security Council emergency meeting regarding accusations of the use of a nerve agent in the United Kingdom at the United Nations headquarters in New York, on March 14, 2018. Russian Ambassador to the United Nations Vassily Nebenzia said Wednesday that Britain's allegations that Moscow was responsible for a nerve attack were "completely unacceptable." (Xinhua/Li Muzi)