Framework Convention for the Protection of the Marine Environment of the Caspian Sea
The Framework Convention for the Protection of the Marine Environment of the Caspian Sea, commonly known as the Tehran Convention, is the first legally binding regional environmental agreement signed by all five Caspian littoral states: the Republic of Azerbaijan, the Islamic Republic of Iran, the Republic of Kazakhstan, the Russian Federation and Turkmenistan. Adopted in Tehran on 4 November 2003 and in force since 12 August 2006, it establishes an overarching governance framework for protecting the Caspian Sea from all sources of pollution and for the sustainable management of its resources.