::::::::: CBC - WORLD NEWS :::::::::                    U.S. launches tariff challenge at WTO against Canada, Mexico, Turkey, China and EU          Trump, Putin emerge from summit, say Moscow did not interfere in U.S. election          U.S. willing to be part of Afghanistan talks with Taliban, NATO commander says          Theresa May's office quickly dismisses MP's call for new Brexit referendum          Global firm bans meat at company events in effort to be greener          Several European countries agree to take about 400 migrants who are now in Sicily          Over a billion people struggle to stay cool as Earth warms          Royal family releases new photos to mark Prince Louis's christening          Israeli PM warns Hamas will face a 'wall of steel'          5 years after declaring bankruptcy, Detroit reborn at a cost          Russian bots, 'troll factory' test waters ahead of U.S. midterms          Tens of thousands flood Paris streets to celebrate France's World Cup win          New Mexico bus crash leaves 3 dead, 24 injured          Novak Djokovic wins 4th Wimbledon title, 13th Grand Slam          Russian punk band Pussy Riot claims on-field protest at World Cup final           Man arrested over paraglider protest at Trump resort          Trump meets Putin: Here's how U.S. and Russian summits have varied since 1943          Belgium blanks England to finish 3rd at World Cup