President Volodymyr Zelensky, his Ukrainian warriors and his courageous people fight on. Against all odds, they defeated Vladimir Putin’s army in the Battle of Kyiv. But one inspiring victory does not win a war. They are now bracing for what promises to be an even larger Battle of the Donbas in eastern Ukraine, which Ukrainian officials believe could determine the outcome of the war. They still need help from the West — and the West must respond without caving to Russian threats.