In the present scenario South Asia is getting rigged with vortex of challenges ranging on to issue of deep concern. Be it economics, political, military, energy, poverty and illiteracy, the concept of security is undergoing a paradigm shift. Further the role of non-state actors in regional scenario and their endeavour to acquire nuclear technology present an alarming challenge. This especially in view of our estranged neighbourhood. In this regard, the security of South Asia has to be consciously debated with greater vigour to maintain peace and security leading to sustainable development.