This study examines the complex relationships between climate change, food security, and national development through a systematic analysis of existing literature and empirical evidence from 2005 to 2023. The research investigates three key variables: factors affecting climate change and food security, mitigating strategies, and policy recommendations. Analysis reveals significant impacts of climate change on food production, with global temperature increases reducing crop yields by 10-25% and altered precipitation patterns disrupting agricultural systems. The study identifies successful mitigation strategies across different countries, including climate-smart agriculture showing 15-30% improvement in resilience, technological innovations enhancing efficiency by 25-35%, and nature-based solutions increasing soil fertility by 30-45%. Policy analysis demonstrates that comprehensive agricultural reforms reduce waste by 35%, while sustainable farming incentives increase adoption rates by 45%. Based on these findings, the study proposes the Climate-Food Security Resilience Theory (CFSRT), which integrates environmental, technological, and policy dimensions. The research concludes that effective climate change adaptation and food security require a holistic approach combining technological innovation, policy support, and community engagement, while emphasizing the importance of integrating traditional knowledge with modern approaches.