I welcome this opportunity to present to such a distinguished audience some views on issues relating to nuclear non-proliferation and international security. At the outset, I would like to thank the Institute for Defence Studies and Analyses (IDSA) for inviting me to deliver this address. The Institute has a well deserved reputation as our premier strategic think tank and quite appropriately, they have focused on a subject that not only has a strong contemporary relevance but represents a long term challenge for India and the international community.