Turkey's President Recep Tayyip Erdogan, right, and Russian President Vladimir Putin arrive for their joint news conference following their meeting in Istanbul, Monday, Oct. 10, 2016. Photo by Emrah Gurel

Pope Francis waves to journalists as he stands by Istanbul Mufti Rahmi Yaran upon their arrival to the Blue Mosque in Istanbul, Turkey, Saturday, Nov. 29, 2014. Photo by Emrah Gurel

Turkey's eleventh President Abdullah Gul. July 24, 2012. Photo By Emrah Gurel