Nuclear Threat & Security is a multi disciplinary and contemporary issue related edited book: The Present Security Scenario has been change the multi-dimensional nature as non - conventional global threat and critical challenges to origin a survival problem for human society. Nuclear threat a major challenges to the international society and whole world to be taken immediate attention it ensure for comprehensive Security. Nuclear and non-nuclear states both try to precaution against any types of accident and nuclear war related fear specially WMD - (weapons of mass destruction). United Nation, inter-national law and disarmament front has been. failed in the maintained to Peace and Security Environment in the World.

The fundamentals of conceptual study of Nuclear Threat or Non - Conventional Threat related unique style this book has to discover and formulate the basic concepts which guide and govern International Peace & Security matter. This gives rise to deferent mode of awareness and security option with different approaches as various chapters as well as nuclear terrorism and world security.

As teacher of defence and strategic studies we will have to bear the character of our study in mind and while studying the problems and events in the field of International Peace and Security. We should avoid indulging in their narration or going into their details. Rather, we should devote ourselves to deriving conclusions and formulation of concepts on their basis.

It is in this spirit that this work has been prepared with the help of similar such studies produced by learned teachers and scholars here and abroad. Their debt has been duly acknowledged in end notes. May this study serve the long felt need of students and scholars of related subject.