美防长鼓吹重建“绝对威慑力”，专家：凸显美国霸权思维

Group 1 - The core message of the articles emphasizes the U.S. commitment to rebuilding its absolute military superiority, which is intended to deter adversaries from challenging the U.S. [1][3] - U.S. Defense Secretary Lloyd Austin highlighted the return of American deterrence, citing military actions against groups like the Houthi rebels in Yemen and Iran's nuclear facilities as evidence of this renewed strength [3] - The articles discuss the shift in U.S. foreign policy, indicating a more aggressive stance in maintaining its hegemony, with a focus on military superiority as a primary strategy [3] Group 2 - The commentary from experts suggests that the U.S. is no longer disguising its hegemonic ambitions, openly stating that military superiority is essential for its global leadership [3] - There is an indication of anxiety regarding power shifts, with the military-industrial complex leveraging this anxiety to influence U.S. national strategy [3] - The articles point out that the U.S. is prepared to adopt more aggressive foreign policy actions to demonstrate its dominance, particularly against smaller nations [3]