The term Caspian Port is composed of three crossword solutions: IRAN (4 letters), ARAL (4 letters), and ASEA (4 letters). IRAN is a country located in the Middle East, bordered by Iraq, Turkey, Armenia, Azerbaijan, Turkmenistan, Afghanistan, and Pakistan. The ARAL Sea is a large lake located between Kazakhstan and Uzbekistan, which has been shrinking since the 1960s due to the diversion of its feeder rivers for irrigation. ASEA is a port city located on the southeastern coast of the Caspian Sea in IRAN. It is the largest port in the country and serves as a major hub for trade and transportation.