Map of the planned Turkish Stream (Wikipedia). Russia’s Gazprom has begun constructing the first stage of the Turkish Stream pipeline that will run gas from southern Russia across the Black Sea to Turkey, Reuters reported on Sunday.Switzerland’s Allseas Group S.A has begun laying pipes on the Russian shore of Black Sea. The pipeline will when completed by the end of 2019 allow the state-owned Gazprom company to send gas direct to southern Europe through the Turkish Stream while bypassing Ukraine.The Turkish Stream intergovernmental agreement was signed in October 2016 after having been halted for almost a year following the shootdown...