The Five Nations Bordering the Caspian Sea

The Caspian Sea—the world's largest inland body of water—is bordered by five countries, each with significant coastline and strategic interests.

The Five Caspian Littoral States

1. Russia – Northwest coast (Dagestan, Kalmykia, Astrakhan Oblast). Major ports: Astrakhan, Makhachkala. Volga River delta enters here.
2. Kazakhstan – Northeast and east coast (Mangystau, Atyrau regions). Longest coastline (~1,450 mi). Major oil fields (Kashagan, Tengiz). Port: Aktau.
3. Turkmenistan – Southeast coast (Balkan Province). Huge gas reserves (Galkynysh). Port: Türkmenbaşy.
4. Iran – Southern coast (Gilan, Mazandaran, Golestan provinces). Ports: Bandar Anzali, Nowshahr, Amirabad. Historic Persian connection.
5. Azerbaijan – Southwest coast (Absheron Peninsula, Baku archipelago). Capital Baku is the region's largest city. Major oil/gas hub. Port: Baku.

Legal Status & Resources

The 2018 Convention on the Legal Status of the Caspian Sea (signed by all five) clarified it as a unique legal regime—neither fully a sea nor a lake. It governs:

• Surface: Freedom of navigation for littoral states.
• Seabed/Subsoil: Divided by bilateral agreements (sectors for oil/gas).
• Sturgeon/Caviar: Joint conservation quotas.
• Military: Only littoral states' navies allowed.

Environmental Concerns

• Fluctuating water levels (climate change, Volga diversion)
• Pollution (industrial, agricultural, oil)
• Invasive species (comb jellyfish)
• Endangered sturgeon (caviar source)

The Caspian is a geopolitical and ecological crossroads where energy, environment, and Eurasian politics converge.