This document provides an overview of the Indo-US nuclear deal signed in 2005 between India and the United States. It discusses the background of India-US political relations prior to the deal and the key interests and objectives of both countries. For India, the deal recognized it as a de facto nuclear power, ended its nuclear isolation, and aimed to deepen strategic ties with the US. For the US, the deal aimed to enhance strategic partnership with India to counterbalance China's influence in Asia and bring India's nuclear program under international safeguards. The deal had implications for the South Asian strategic environment by increasing Pakistan's security concerns over its strategic capabilities relative to India and fueling China's worries over growing India-US cooperation.