by Jerome CARTILLIER OTTAWA, Canada (AFP) — US President Barack Obama heads to Ottawa Wednesday for talks with the leaders of Canada and Mexico, as the shockwave from Britain’s vote to leave the European Union reverberates on both sides of the Atlantic. Obama and Canadian Prime Minister Justin Trudeau, who both made clear their desire to see Britain remain in the 28-member bloc, will join Mexican President Enrique Pena Nieto for the so-called “Three Amigos” […]