The quick pace of U.S. diplomacy around ending the war in Ukraine and steps by Washington to normalize relations with Moscow have sparked fears in Kyiv and European capitals about being sidelined and saddled with a peace deal that favors Russia. But the prospect of a rapprochement between Russian President Vladimir Putin and U.S. President Donald Trump isn’t only bringing anxiety to European governments. The quick pivot away from decades of U.S. foreign policy toward Russia is also fueling unease in China. “The Chinese have seen this…