Turkey is an invented country built on the ruins of the empire. The sultan of the Ottoman empire was also the Caliph, the spiritual leader of all of the world's Sunnis. The identity of the Ottoman Empire was intrinsically linked to it's status as the pre-eminent Islamic power. After the empire collapsed, Mustafa Kemal Atatürk attempted to replace this religious identity with a new secular and fairly isolationist Turk nationalism centred on Turks in Anatolia. However, the repression of muslim identity in Turkey that resulted from this eventually led to a backlash and resurgence of Islamism led by Erdogan. Erdogan is determined to break with Atatürk's ideals in key areas, and one of those is reasserting Turkey's power within it's traditional sphere of influence in the Mediterranean and middle east.But the Ottoman Empire isn't Turkey.