ZAPORIZHZHIA, Ukraine — Russian President Vladimir Putin marked his country’s biggest patriotic holiday Monday without a major new battlefield success in Ukraine to boast of, as the war ground on through its 11th week with the Kremlin’s forces making little or no progress in their offensive. The Russian leader oversaw a Victory Day parade on Moscow’s Red Square, watching as troops marched in formation and military hardware rolled past in a celebration of the Soviet Union’s role in the 1945 defeat of Nazi Germany. While Western analysts in recent weeks had widely expected Putin to use the holiday to trumpet...