日本前首相曾反常提醒：中国别单挑美国，应火速与这两国结盟

Group 1 - The core issue revolves around Japan's changing relationship with the United States, particularly in light of recent tariff negotiations that have shifted from discussions of conditions to strict enforcement without room for negotiation [1][4][10] - Japan's key industries, such as automotive and steel, are directly impacted by the tariffs, which not only affect financials but also employment and local economies [4][6] - The U.S. has adopted a transactional approach to alliances, treating security and market access as items on a bill that can be adjusted, leading Japan to realize that its long-standing preferential treatment is no longer guaranteed [10][11] Group 2 - Former Prime Minister Yukio Hatoyama's call for Japan to collaborate with South Korea and China reflects a growing recognition of the need for regional cooperation in the face of U.S. pressure [1][18] - The situation in South Korea mirrors Japan's, as it also faces tariff pressures and is reassessing its reliance on the U.S., indicating a broader structural issue rather than just negotiation tactics [24] - The historical and political complexities between China, Japan, and South Korea present challenges to forming a cohesive alliance, but there are practical avenues for cooperation, such as stabilizing regional supply chains and facilitating trade [22][24]