In this article the author opines that in today's world, the two nationalism and globalism are complementary. Topics include in the 1920s, when nationalism was authoritarian and the balance of power pernicious, nationalism was a destructive force, and today, all major industrialized nations are democracies and in this kind of world, nationalism is not a destructive force but a democratic check on global elites and institutions, and the U.S. president Donald Trump put the interests of the U.S. first, sparking fears that nationalism would now destroy the liberal international order while the former U.S. president Barack Obama gave up the military playbook altogether, trusting in persistent diplomacy to reset relations with Iran, Russia and China.