Turkish President Recep Tayyip Erdogan (C) delivers a speech during the inauguration ceremony of the new Bestepe People's Mosque on the grounds of the Turkish presidential palace in Ankara

This handout picture release on July 3, 2015 by the Presidential Press Office shows people praying in Ankara after Turkish President inaugurated a mosque inside his controversial presidential palace.

This handout picture release on July 3, 2015 by the Presidential Press Office shows Turkish President Recep Tayyip Erdogan, (4thR) speaking with Prime Minister Ahmet Davutoglu, (CR), and Religious Affairs Chairman Mehmet Gormez, (3rdR), during a visit of the newly inaugurated mosque on the grounds of a controversial presidential palace in Ankara.

This handout picture release on July 3, 2015 by the Presidential Press Office shows Turkish President Recep Tayyip Erdogan (R) and Prime Minister Ahmet Davutoglu (2nd R) greeting their supporters after attending an opening ceremony of the new mosque named Bestepe People's Mosque on the ground of Turkish Presidential Palace in Ankara.