Russia and Turkey have suspended negotiations on the $12bn Turkish Stream pipeline project after relations between the two countries deteriorated due to the Nato member shooting down a Russian military aircraft.
On 24 November 2015, Turkey shot down a Russian bomber, claiming that it violated its airspace despite repeated warning.
Since then, relations between Nato member Turkey and Russia have deteriorated with the Russian side threatening sanctions.
Deutsche Welle quoted Russian President Vladimir Putin saying in his annual State of the Nation address to parliament: "We will not rattle our sabres.
"But if anyone thinks that after committing a heinous war crime, the murder of our people, they will get away with (an embargo on) tomatoes or some restrictions on construction and other industries, they are deeply mistaken."
The Gazprom‘s project will involve construction of a 910km offshore natural gas pipeline, as well as a 180km onshore pipeline to transport Russia’s gas reserves through the Black Sea to Turkey’s transportation network.
The pipeline has been planned to bypass Ukraine through four pipelines under the Black Sea and deliver Russian natural gas to Southern Europe and Turkey.
Turkish Stream is the working name of the proposed natural gas pipeline announced by Putin on 1 December 2014.
The pipeline will have a design capacity of 63 billion cubic metres per annum of natural gas.
In June 2015, Gazprom secured permission from Turkey to carry out engineering surveys for the offshore section of the Turkish Stream and planned to conduct investigations within the exclusive economic zone and territorial waters of Turkey.
Image: The offshore section of Turkish Stream will comprise four strings. Photo: courtesy of Gazprom.