Russian President Vladimir Putin signed a Federal law on ratification of the Convention on the legal status of the Caspian Sea, the official Internet portal of legal information reports Interfax.

The document defines and regulates the rights and obligations of coastal States with regard to the use of the Caspian Sea, including its waters, bottom, subsoil, natural resources and airspace over the sea.

The Convention was signed in the Kazakh city of Aktau on August 12, 2018, its participants are Azerbaijan, Iran, Kazakhstan, Russia and Turkmenistan.

In 2019, Kazakhstan, Azerbaijan and Turkmenistan ratified the Convention. Members of the Iranian Parliament have not yet signed the document. The Convention will enter into force after signing by all Caspian countries.

The unsettled status of the Caspian sea has for many years been a major obstacle to the construction of the TRANS-Caspian gas pipeline, which is designed to deliver natural gas from Turkmenistan through Azerbaijan, Georgia and Turkey to Europe.