Turkey-NATO relations have a history of challenges more or less since Turkey’s accession to NATO in 1952. Strained relations between Turkey and NATO have begun long before Turkey’s alleged failed coup attempt on 15 July 2016. However, the failed coup attempt increased tensions further and it is fair to assume that these tense relations are likely to continue. At the same time, Turkey-NATO relations are constrained by a not yet amended North Atlantic Treaty of 4 April 1949. As long as the treaty remains not updated very little can be done to change the nature of Turkey-NATO relations.