The immensely destructive Ukraine War could have been prevented if Vladimir Putin had not been determined to revive Russia's "great power" status or if the United Nations, established to preserve international peace and security, had had the power to take action to stop the war from occurring.  And the war could still come to an end through either the Russian government's concluding that the conflict had become too costly in lives, resources, and internal stability to continue or the countries of the world concluding that it was finally time to empower the United Nations to safeguard international peace and security.