Caspian Sea
The sea has a surface area of 371,000 km (143,200 sq mi) (not including the detached lagoon of Garabogazköl) and a volume of 78,200 km(18,800 cu mi). It has a salinity of approximately 1.2% (12 g/l), about a third of the salinity of most seawater.
Trans-Caspian Gas Pipeline
The project is heavily criticized by Russia and Iran, current transit countries for Turkmen gas. Alexander Golovin, special envoy on Caspian issues, has stated that a major gas pipeline would pose a serious, dangerous risk to the prosperity of the entire region. According to the Russian Natural Resources Ministry, any gas or oil pipelines across the floor of the Caspian Sea would be environmentally unacceptable. Russia has also taken the legal position that a potential pipeline project, regardless of the route it takes on the seabed, would require the consent of all five Caspian littoral states in order to proceed. Iran has pointed out that treaties signed by Iran and the Soviet Union in 1921 and 1940 are still in force and that any action taken without the consent of all the littoral states would be illegal. In regard of the decision taken by the EU on 12 September 2011, Russia expressed its "disappointment" as it "seems to have been adopted without taking into account the internationally accepted legal and geopolitical situation in the Caspian basin," and as Caspian Sea littoral state, Russia could veto any international agreement allowing for the pipeline to be built.