- Physical Geography:
- Earth's largest inland body of water, when measured by surface area.
- Bordered by Russia (northwest), Azerbaijan (west), Iran (south), Turkmenistan (southeast) and Kazakhstan (northeast).
- In 2003, the Caspian littoral states signed the (Tehran) Framework Convention for the Protection of the Marine Environment of the Caspian Sea.
- Lies at the junction of Europe and Asia, with the Caucasus Mountains to the west and the steppes of Central Asia to the east.
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