In January, after weeks of threats by U.S. President Donald Trump to annex Canada as the “51st state,” Canadian Prime Minister Mark Carney stood in Beijing’s Great Hall of the People, radiating cordiality toward the leaders of a country he had called Canada’s greatest geopolitical threat less than a year earlier. In a meeting with Chinese Premier Li Qiang, he said that “the progress that we have made in the partnership sets us up well for the new world order.” It was not a great moment for the United States. Yet that scene—a leader anxious about Washington, rushing to Beijing with a newfound urgency—has played out again and again since Trump’s return to the White House. In 2025, the leaders of Australia, France, Georgia, New Zealand, Portugal, Serbia, Slovakia, Spain, and the European Union all traveled to China.…