The world we knew at the end of the 20th century has changed radically. For decades, the United States and the Western European powers were the dominant players on the global stage, shaping the economic, political, and cultural system we understand today as the "world order." However, in the early decades of the 21st century, it has become clear that this dominance is no longer absolute. China and India, two countries with millennia-old roots but very different recent trajectories, have emerged as decisive protagonists, challenging traditional power structures and offering new visions of leadership and development. This book, The New World Order: China and India as Protagonists, explores how these countries have risen to the top of global power, transforming not only their own societies but also the global balance of power. Both countries, with their vast populations, dynamic economies, and rich cultures, have traveled a path full of challenges: from internal reforms and economic opening processes to competition in the most advanced technological and geopolitical arenas. China's rise has perhaps been the most spectacular, with unprecedented economic growth that has made it the second-largest economy in the world. Through its ambitious global strategy, including the Belt and Road Initiative, China has extended its influence across Asia, Africa, and Latin America, evoking both admiration and concern in the West. On the other hand, India, with its vibrant democracy and growing prominence in technology, science, and global services, has found its own path to global leadership, despite its enormous internal challenges, such as poverty and inequality. This new global balance, however, is not without tensions. Relations between these emerging powers and the traditional global leaders, especially the United States and the European Union, are marked by a mixture of cooperation and confrontation. Trade disputes, technological competition, and new forms of conflict in the digital age have reshaped diplomacy and geopolitics, creating an uncertain but opportunity-filled landscape for global transformation. In the following chapters, we will delve deeply into the role of China and India in this new scenario, observing not only their economic rise but also the political, social, and environmental repercussions of their growth. Moreover, we will explore how their emergence is redefining international relations and power balances in a world increasingly multipolar and marked by common challenges such as climate change, energy crises, and global conflicts. This book not only seeks to understand the causes of the rise of China and India but also to anticipate the kind of future they might shape. Will these emerging powers be able to lead a new world order based on cooperation, or will their growth heighten tensions and conflicts in an already volatile global landscape? The rise of China and India is not just a story of power and progress; it is the story of a world that is changing before our eyes, with implications that will affect all nations, and therefore, all of us.