Diplomatic diversification is advancing among US allies. What possibilities do various minilateral frameworks offer? “Hedging-based cooperation” is expanding as a means to mitigate excessive strategic and economic dependence on the United States. Efforts are underway to restructure the Quad’s agenda, while new frameworks that do not include the United States are simultaneously emerging. Regional actors are increasingly seeking to “engage” in shaping a multilayered order, rather than being compelled to make a binary “choice” between competing systems led by the United States and China. In 2025, international politics reached a critical inflection point. Most significantly, the United States—Japan’s sole ally and the long-standing anchor of stability in the Indo-Pacific—has clearly begun to reorient its diplomatic course toward an “America First” policy under the second Donald Trump administration, emerging as a force that shakes the very foundations of the existing international order. However, the destabilization ... ... [Read more]