Canadian Prime Minister Justin Trudeau speaks during a High Level Leaders Meeting on Refugees on the sidelines of the United Nations General Assembly at United Nations headquarters in New York City, U.S. September 20, 2016. REUTERS/Brendan McDermid

U.S. President Barack Obama speaks during a High Level Leaders Meeting on Refugees on the sidelines of the United Nations General Assembly at United Nations headquarters in New York City, U.S. September 20, 2016. REUTERS/Brendan McDermid

UN Women’s Goodwill Ambassador, Emma Watson, speaks during a news conference to launch the HeForShe IMPACT on the sidelines of the United Nations General Assembly at United Nations headquarters in New York City, U.S. September 20, 2016. REUTERS/Brendan McDermid

Canadian Prime Minster Justin Trudeau arrives for a press conference in the lobby of the United Nations Headquarters in the Manhattan borough of New York, March 16, 2016. REUTERS/Adrees Latif 

Canadian Prime Minster Justin Trudeau speaks during a press conference in the lobby of the United Nations Headquarters in the Manhattan borough of New York, March 16, 2016. REUTERS/Adrees Latif 

Women in the foreground smile as Canadian Prime Minster Justin Trudeau greets people in the lobby of the United Nations Headquarters following a press conference in the Manhattan borough of New York, March 16, 2016. REUTERS/Adrees Latif TPX IMAGES OF THE DAY

Business Secretary Peter Mandelson (C) fields a question during a press conference with Britain's Prime Minister Gordon Brown (L) and Chancellor of the Exchequer Alistair Darling at the Labour Party's headquarters in central London, April 8, 2010. British Prime Minister Gordon Brown said on Thursday the opposition Conservative Party's tax plans did not add up, seeking to take the initiative on an issue dominating campaigning in the run up to the May 6 election. REUTERS/Andrew Winning (BRITAIN - Tags: POLITICS ELECTIONS BUSINESS) 

U.S. President Barack Obama inspects an array of solar panels generating electricity at Nellis Air Force Base in Las Vegas, Nevada May 27, 2009. Obama marked the 100th day of the American Recovery and Reinvestment Act by highlighting the development and use of geothermal and solar energy. REUTERS/Jason Reed (UNITED STATES ENVIRONMENT BUSINESS ENERGY) 

U.S. Air Force F-15 jets from the 95th Fighter Squadron at Tyndall Air Force Base in Florida fly over the racetrack during the national anthem prior to the Gatorade Duel No. 1 NASCAR Sprint Cup Series race at the Daytona International Speedway in Daytona Beach, Florida February 12, 2009. The two Duel races determine the starting order for the field, except for the first and second positions. The 51st Daytona 500 is scheduled on February 15. REUTERS/Pierre Ducharme (UNITED STATES) 

U.S. President George W. Bush walks towards Air Force One at Andrews Air Force base near Washington, April 10, 2008. Bush is travelling to his ranch in Crawford, Texas for the weekend. REUTERS/Jason Reed (UNITED STATES)