President Vladimir Putin sought to justify his contentious war against Ukraine during a huge Victory Day parade on Monday, once again falsely calling Ukrainians “Nazis” and insisting without evidence that Kyiv was planning to build nuclear weapons. As Russia celebrated its most emotional holiday commemorating the Nazi defeat in World War II, Putin appeared in Red Square to invoke pride and sorrow over the Soviet role then and to cast Russia’s battles in Ukraine now as such a just cause. “There is no place in the world for executioners, punishers and Nazis,” he said. A day earlier, he had described...