As an exhausted, internally divided America proclaims its return and promises a new era of diplomatic leadership, its global partners are rightfully skeptical. Year one of the Biden era has seen the botched withdrawal from Afghanistan, casting doubts about the president’s foreign policy judgment. So long as the disgraced President Donald J. Trump remains the Republicans’ current frontrunner for 2024, the world cannot expect fidelity and competence to emerge from the loyal opposition. For now, at least, it is on President Biden to provide leadership, course-correct away from the lack of reliability, and contain Chinese aggrandizement before its merry band of fellow autocrats from Moscow to Kabul and from Tehran to Pyongyang supplants the US-led world order. Biden’s recent work to transform Australia into an Indo-Pacific bulwark against China, however, has worryingly offended a critical ally — France — and exposed some serious bungling in the U.S. Government.