Global Environment is one of the central themes in global politics. Degradation of the global environment is linked to the models of economic growth and development. Efforts at the international level have focused on integrating sustainable development paradigm in the contemporary models of economic growth and development. Amongst the range of environmental issues, climate change is the most important issue as it poses the biggest threat to humanity. The concept of security widened in the 1990s to include human security. Climate change poses challenge to many aspects of human security, particularly food security. The climate change adversely impacts agricultural production and consequently food security. Achieving food security in the developing countries in the context of climate change, increasing population, increasing per capita consumption of food, and changes in dietary habits is indeed a serious challenge. There is a clear North-South dimension in food security. The Northern countries have more than enough food to feed their population with high calories diet. The Southern countries have insufficient availability of food supply. Almost all the malnourished people of the world live in the Southern countries. Climate change is likely to aggravate food insecurity in the South and also lead to higher imports of food from the North.