Caspian Sea
Between Europe and Asia; bordered by Russia, Kazakhstan, Turkmenistan, Iran and Azerbaijan
Why in news
Aug 2026
Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level.
Jul 2026
Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level.
May 2026
Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level.
Apr 2026
Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level.
Key facts
- Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes - reduced river inflow, water withdrawal and higher evaporation - prompting a regional cooperation declaration on its falling level.
UPSC relevance
Prelims
Prelims may ask the countries bordering it and its strategic importance.
Mains
Mains (GS-2): maritime security and regional geopolitics.
Asked in UPSC
2025, 2020, 2019, 2014, 2004, 2003, 2001
Frequently asked questions
Why is Caspian Sea in the news?
Apr 2026: Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level. May 2026: Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level. Jul 2026: Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level. Aug 2026: Its hydrocarbon basin and transit routes featured in India's energy-security and INSTC calculations with Azerbaijan. It emerged as a backdoor logistics route between Russia and Iran during the West Asia conflict. A study warned this landlocked sea is shrinking, threatening its unique ecology and the economies of its littoral states. The world's largest inland water body kept shrinking from climatic and human causes — reduced river inflow, water withdrawal and higher evaporation — prompting a regional cooperation declaration on its falling level.
Why is Caspian Sea important for UPSC?
Prelims may ask the countries bordering it and its strategic importance. Mains (GS-2): maritime security and regional geopolitics.
Last updated: 2026-10-09