Today is the anniversary of the atomic bombing of Japan—a milestone for which all humanity would do well to give pause. It is an especially salient date for 88-year-old Douglas Roche, former Canadian ambassador for disarmament and an honourary citizen of Hiroshima. Roche seeks a nuclear-weapons-free world, and he wants Canada to broker it. Alas, it's not going to happen. The news this week that North Korea's Hwasong-14 ICBM can reach Canadian and U.S. cities almost certainly means Canada will have to reopen the BMD file, iced by PM Paul Martin in 2005.  If we must once again embrace the terrifying Cold War logic of MAD, let there be many Douglas Roches to guide us.