Security is a major contemporary concern, with foreign and security policies topping the agenda of many governments. At the centre of Western security concerns is Turkey, due to its geographical proximity to converging major fault lines such as the Caucasus, the Mediterranean and the Middle East. As trans-Atlantic debates evolve around these major fault lines, future relations will have a direct impact on the re-orientation of Turkish foreign and security policies. This comprehensive study focuses on the future of Turkish foreign and security policies within the emerging strategies of the two Wests. Discussing the challenges Turkey has been facing since the turn of the century, it examines Turkish foreign policy in the context of trans-Atlantic relations - as a global actor, and with respect to conflict, new power relations, energy security, Greece, Cyprus and the environment.