In the twenty-first century, the phenomena of climate diplomacy and geopolitics are inextricably linked to each other, especially when it comes to navigating ascending challenges as well as seizing opportunities presented by climate action with a view to establishing a more equitable and sustainable world. Considering these notions, the present research attempts to assess the relationship between climate diplomacy and geopolitics by emphasising on the role of climate policy in international relations and the evaluation of requisite needs for international collaboration in order to address the impending climate change threat. This research is the compendium of different case studies, such as the Organization for Security and Co-operation in Europe (OSCE), European Union (EU) climate politics, together with India's role in climate diplomacy to provide a comprehensive understanding of the evolving landscape. Furthermore, the research navigates the inevitable challenges faced by fossil fuel-producing nations by evaluating economic vulnerabilities, environmental responsibilities, and geopolitical tensions associated with resource extraction. The countries most responsible for spreading fossil fuels ought to adapt to a changing energy landscape by embracing renewable technologies to remain economically relevant. The study also assesses various geopolitical issues that are linked to climate change, including the Arctic's strategic importance, land competition, renewable energy dependencies, and water scarcity in mountainous regions. The research methodology involves a "desk" research approach, drawing on secondary data from published studies, reports, and statistics. To infer, the research offers a panoramic view of the interplay between various actors and factors in the domain of climate diplomacy and geopolitics by providing with a foundation for policymakers, diplomats, and researchers to formulate effective strategies for global climate action.