United States first lady Melania Trump is set to chair a meeting of the United Nations Security Council in New York on Monday, the White House announced, marking the first time a spouse of a serving world leader has done so.“First lady Melania Trump is set to make history at the United Nations, taking the gavel as the United States assumes the Security Council Presidency to emphasise education’s role in advancing tolerance and world peace,” the White House said.The US assumes a monthly...