According to the change made in the Regulation for the Implementation Turkish of Citizenship Law on 19/09/2018 foreigners who purchase 500.000 USD or equivalent foreign currency or equivalent Turkish Lira real estate investment fund and keep it for at least three years will be able to exceptionally acquire the Turkish citizenship. The 'Certificate of Conformity', which indicates that the minimum investment requirement is met, is issued by the Capital Markets Board. You may reach more details regarding the process of citizenship acquisition through REIF from here.