Article: Turkey's Strategic Depth doctrine revisited - Turkish foreign policy under Erdogan has been associated with the name of Ahmet Davuto?lu, once his chief foreign policy advisor. In his book 'Strategic Depth,' published in 2001, Davuto?lu elaborates on his strategic vision about Turkey. He argues that Turkey possesses 'strategic depth' due to its history and geographic position and lists Turkey among a small group of countries which he calls 'central powers'.