The post-Cold War years have witnessed rivalries and cooperation among the players for the Caucasusand Caspian Sea natural resources. The significance of the petrochemical resources of the region wasincreased by the policies were played for the transportation routes and competition on them. The BTCpipeline project was one of the important alternatives of network route of natural resources of theCaspian region for the western markets in general for the region in particular. The issue became amulti-faced matter in the fields of economic, security, political and diplomatic relations of the regionalcountries. The paper will discuss the BTC pipeline policies of the involving players’ whys andwherefores of interests.Key words: The Caspian Sea resources, energy security, oil and natural gas, the BTC Pipeline, foreignpolicy.