Following the shootdown of a Russian fighter jet by Turkey in November 2015 , the project was temporarily halted . However , Russia – Turkey relations were restored in summer 2016 and the intergovernmental agreement for TurkStream was signed in October 2016 . Construction started in May 2017 and was completed in November 2018
shootdown of a Russian fighter jet by Turkey
2015 Russian Sukhoi Su-24 shootdown
TurkStream