Nuclear relations in South Asia cannot be fully analyzed without taking into account the China factor. After the May 1998 nuclear tests, a substantive amount of strategic literature has been focused on Indian and Pakistani nuclear postures and policies, respectively. However, their integral links with China in transforming South Asia’s nuclear environment remains one critical component that has not been adequately examined. Multifaceted cooperation, competition and conflict have engulfed this triangle since the India-U.S. nuclear deal. This deal has significantly increased India’s nuclear weapons capability, and hence exacerbated the security dilemma of Pakistan and China, which has important implications for the strategic stability in the region. This paper analyses the strategic implications of this deal for the nuclear triangle and argues that the nuclear triangle will remain complex with inherent risks as well as pose challenges to the region’s strategic stability. China-India-Pakistan nuclear strategies will be determined by the larger triangle of U.S.-China-India relations, which will define the politics of South Asia as well as the larger Asian landscape.