The scope of this study is limited to the impacts of Iranian Nuclear program on the South Asian region if Iran overtly (openly tests nuclear weapons or uses it) or covertly (develops nuclear weapons secretly in the guise of peaceful nuclear program) acquires nuclear weapons or remains ambiguous. The book attempts to fill the gap in the existing literature available on Iran's nuclear program and its implications for the South Asian region. Many independent research papers exists on Iran's nuclear ambitions and threats posed by it especially to the Middle Eastern region. Very little work has been done in analyzing the threats posed to South Asian region or the implications for South Asia in the wake of Iran going nuclear. Providing a holistic study of the research questions, the book will address this deficiency in literature. The study would not be too significant and up to the soaring standard due to the limitations posed by the resources and time, but the whole hearted effort would be made to address all the considerable issues relating to the goal of the research.