Uncover the intricate geopolitics of India’s Northeast, a vital borderland shaping South and Southeast Asian relations. This insightful study delves into the region’s transformation from a colonial frontier to a modern strategic hub, exploring transnational interactions with China, Bangladesh, and Myanmar. It critically examines the impact of India’s Act East Policy and offers perspectives on overcoming regional geopolitical challenges. Essential reading for students, researchers, and policymakers interested in international relations, strategic studies, and the evolving dynamics of Northeast India.