Between a Rock and a Hard Place? An International Relations Perspective on the Balance of Threats Between China and the U.S. in the Indo-Pacific

China’s emerging rise as a subject of study in contemporary geopolitics is an event that invites multiple interpretations of such an imposing development within the international system, particularly regarding the challenges and tensions that point to a geopolitical strain in the Indo-Pacific region. Accordingly, this paper does not focus merely on economic matters to explain the rise of the Asian giant, but rather on military, cultural, and political issues, including theoretical and contextual perspectives on the emerging shift in the balance of power from bipolarity and unipolarity toward a multipolar order, especially in terms of international security. Thus, this paper addresses the causal factors that place China on the board of modern geopolitics, contrasting, through theoretical lenses, the gray areas that reveal tensions in a region heavily traversed by international trade —such as that stretching between the Indian and Pacific Oceans— where several international actors remain in constant dispute over power and influence. This has led to the emergence of a new maritime pivot zone with marginal outer areas in terms of geographic control, featuring containment structures like the peripheral countries along the coastal zone and U.S. military bases, as well as the network of managed ports evidenced in China’s maritime “String of Pearls”.