In Kamala Harris, America’s adversaries see a president who would be substantially weaker than Joe Biden, whom they could easily manipulate and defy to destroy the U.S.-led global order. Although America’s ferociously anti-Trump media refuses to admit it, there is a powerful group of people who cannot vote in the U.S. presidential election but are rooting for Kamala Harris to win: the leaders of China, Russia, Iran, North Korea, terrorist groups, and other U.S. adversaries. America’s adversaries took full advantage over the past three years of a sharp decline in American global influence and deterrence. This resulted in new wars...