Open this photo in gallery: Yaroslav Hunka, right, waits for the arrival of Ukrainian President Volodymyr Zelenskyy in the House of Commons in Ottawa on Sept. 22.Patrick Doyle/The Canadian Press Since he was celebrated in Parliament, kicking off a political firestorm in Ottawa and outrage around the world, the public has heard nothing from Yaroslav Hunka, the 98-year-old who served in a Nazi unit during the Second World War. But a dozen years ago, Mr. Hunka wrote an essay about his time in the Waffen-SS Galicia Division for an American online magazine focused on Ukrainian war veterans – a piece...