U.S.-Pakistan-China triangle depicts the interplay of complex power politics between regional and extra regional powers in South Asia. Pakistan and China have enjoyed a long and flourishing relationship for the last 6 decades whereas U.S.-Pak relations have gone through various ups and down. This analytical study focuses on U.S. Factor in Sino-Pak relationship while applying Neo-realist theory. A detailed analysis of Indian factor in this triangle is also discussed keeping in view the improving Indo-China and Indo-U.S. relations. Pakistan has the most important Geo-Strategic location in South...