ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan delivers a speech during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan delivers a speech during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan delivers a speech during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: (----EDITORIAL USE ONLY – MANDATORY CREDIT - "TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Turkish President Recep Tayyip Erdogan (3rd L), his wife Emine Erdogan (2nd L) and Vice Chairman of the Justice and Development Party (AK Party) Hayati Yazici (4th L) attend the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan attend the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Kayhan Özer - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan (R), his wife Emine Erdogan (2nd R), Turkish Treasury and Finance Minister Berat Albayrak (L) and his wife Esra Albayrak (2nd L) attend the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Kayhan Özer - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan greets the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Kayhan Özer - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Kayhan Özer - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan delivers a speech during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Kayhan Özer - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: A view of the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan greets the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Raşit Aydoğan - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan greets the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Raşit Aydoğan - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan (R) greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Raşit Aydoğan - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan (L) greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan (R) greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: (----EDITORIAL USE ONLY – MANDATORY CREDIT - "TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Turkish President Recep Tayyip Erdogan greets the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT" - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: (----EDITORIAL USE ONLY – MANDATORY CREDIT - "TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Turkish President Recep Tayyip Erdogan greets the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( TURKISH PRESIDENCY / MURAT CETINMUHURDAR / HANDOUT" - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan (R) and his wife Emine Erdogan (L) greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Murat Kaynak - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan (R) and his wife Emine Erdogan (L) greet the crowd during the ruling Justice and Development (AK) Party's sixth ordinary congress, at Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Murat Kaynak - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan and his wife Emine Erdogan greet the crowd ahead of ruling Justice and Development (AK) Party's sixth ordinary congress, outside Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan addresses the crowd ahead of ruling Justice and Development (AK) Party's sixth ordinary congress, outside Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan addresses the crowd ahead of ruling Justice and Development (AK) Party's sixth ordinary congress, outside Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan (R) and his wife Emine Erdogan (L) greet the crowd ahead of ruling Justice and Development (AK) Party's sixth ordinary congress, outside Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )

ANKARA, TURKEY - AUGUST 18: Turkish President Recep Tayyip Erdogan addresses the crowd ahead of ruling Justice and Development (AK) Party's sixth ordinary congress, outside Ankara Sports Hall, in Ankara, Turkey on August 18, 2018. ( Cem Öksüz - Anadolu Agency )