The trajectories and contents of the Indo-U.S. nuclear agreement between the two countries to enhance such cooperation have become a part of incessant debate in the political process of India. Prime Minister Manmohan Singh and the Congress party were always keen to push through the Indo- U.S. nuclear deal. However, within the Congress-led United Progressive Alliance (UPA) the left parties had strong reservations about the deal owing to its strategic implications. This eventually has led to the withdrawal of the support of the left to the UPA led coalition. In a word, the prospects of the Indo-U.S. nuclear agreement have had wide-ranging repercussions on the domestic politics and foreign policy of India. In view of this, the present volume is going to be a timely contribution to a lively debate on Indo-U.S. nuclear cooperation.