Open this photo in gallery: Ukrainian President Volodymyr Zelensky is greeted by Prime Minister Justin Trudeau before Zelensky addressed the House of Commons in Ottawa, on Sept. 22.SEAN KILPATRICK/AFP/Getty Images Prime Minister Justin Trudeau has personally conveyed his regrets to Volodymr Zelensky about an incident in the House of Commons last month in which Canadian MPs and the Ukrainian President applauded a spectator who fought for a Nazi-led unit during the Second World War. The issue surfaced during a call between Mr. Trudeau and Mr. Zelensky this week, although that part of the discussion is not mentioned in the text...