The question of the stability of American hegemony has consumed U.S. International Relations discourse since the Post-Cold War narrative. With the rapid changes in the international realm and the countless U.S. humanitarian and military operations around the globe, it is no surprise that many well-known researchers have taken the time to look at the impact of American hegemony under strict observation. However, more analysis must be made of these operations' strategic purpose and success. This thesis strives to fill this gap by conducting in-depth case studies on various U.S. military operations from the early 2000s to the present in the Middle East, Eastern Europe, and East Asia. These case studies were selected with the research tool "Comparative Case Study" method to limit any bias in which country or historical event to include in the case study chosen section. With the aid of Structured Analytical Techniques (SATs), an analysis is made using the historical information gathered by the case studies to determine whether the success and impact of U.S. presence in these regions are secure enough to go against a rising Chinese state. Contrary to the resources and attention given to these military operations, the lack of agreement among American presidential administrations on a strategy could have deteriorated American hegemonic presence abroad.