摘要:The relationship between United States and India has transformed fromestrangement to wider engagement since 2004. With the convergence ofinterests and shared values both the US and India came close towards eachother and evolved strategic partnership through civil nuclear cooperation. Thispaper analyze the cost and benefit of strategic partnership with India for US,the impact of India’s emergence as regional power on South Asian balance ofpower and its impact on Pak-US relationship. It also focuses on securitystructure of the region and challenges for the US to maintain strategicpartnership with two rival states (India and Pakistan). The paper also givessome recommendations for balancing power in the region in order to ensuredurable peace not only between India and Pakistan but also in south Asia.