This comprehensive volume offers a novel approach to understanding climate change dynamics in the Indo-Pacific region by combining theoretical foundations with practical country-specific analyses. Beginning with an exploration of climate change and green theory concepts, the book traces the international system’s trajectory in addressing environmental challenges before examining diverse national approaches ranging from the European Union to Bhutan and Sri Lanka. The work provides critical insights into the geopolitical climate competition between the United States and China, analysing how these superpowers are leveraging climate cooperation to strengthen their influence within the Indo-Pacific region. Written for a general audience, the book creates greater awareness of the emerging contours of climate change and the complex contestations surrounding environmental policy in this strategically important region. The volume will be of great interest to scholars and researchers of international relations, environmental politics, climate policy, and Indo-Pacific studies. It will also appeal to policymakers, environmental advocates, and general readers seeking to understand the intersection of geopolitics and climate action in one of the world’s most dynamic regions.