Samuel Huntington's groundbreaking work, 'The Clash of Civilizations,' postulates that future global conflicts will not primarily occur between states or ideologies, but rather along the fault lines separating major civilizations. He argues that cultural and religious identities will become the dominant source of conflict in the post-Cold War world, proposing a new paradigm for understanding international relations. This influential and often debated book examines how these civilizational clashes could reshape political alliances, economic structures, and ultimately, the entire global order, offering a provocative vision of the 21st century's geopolitical landscape.