Bargaining Chip: 'US Won't Extradite Gulen Until He's Served His Purpose'

Vice President Joe Biden is coming to Turkey. Ahead of the visit, a group of US officials arrived in Ankara to discuss the extradition of Turkish preacher Fethullah Gulen, which Ankara has accused of masterminding the July 15 military coup attempt. A Turkish political scientist told Sputnik what will have to happen for the US to hand over Gulen.