The end of cold war and the on-going globalization process along with the proliferation of non-traditional threat to security of the nations led to multilateralism in international relations. Though the great powers are not ready to accept the new developments, the post-cold war events such as threat from non-state actors to the security of nation, the global economic slowdown, and global climate change compelled even the most militarily powerful nation to seek multilateral approach to address these trans-border menaces. The global movements towards democratization and protection and promotion of human rights supported by ICT once again brought individuals rights and security into focal point. It appears that even if nations are secure people living there may not be secure. The civil wars taken place in some nation states to protect the rights of multi-ethnic groups or the demand for right to self-determinations of people are examples of such a situation. In this context security means people's security and international efforts are required to ensure people's security from any threat emanates from within or outside the nation states. Thus human security assumes great significance in the post-cold war era of profoundly interdependent global system. There is a blurred boundary between national security and international security on the one hand and the national security and human security on the other hand. The initiative taken by the new government at the federal level towards good neighbourhood and better relation with great powers along with focusing more on human security issues appears to be policy in the right direction. Again the shift from a land centric security paradigm to maritime security and coastal security are also visible in recent times. The book deals with the changing dimensions of security at the theoretical level and a wide spectrum of security issues that India is confronted with and also certain policy options. In the theoretical section the strategic doctrine of India is well reviewed and policy options are also explored. It covers areas such as biological perspective of security, human security perspective, energy security and maritime security. In addition it also examines some of the bilateral security issues and concerns with neighbouring countries.