The Caspian Sea is located in northwest Asia, landlocked between Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan. Since the breakup of the Soviet Union in 1991, the Caspian Sea well as the region surrounding has became the focus of much international attention due to its huge oil and natural gas reserves. The Sea, which is 700 miles long, contains six separate hydrocarbon basins, although most of its oil and natural gas reserves have not been developed yet. Although the littoral states of the Caspian Sea already are major energy producers, many areas of the Sea and the surrounding area remain unexplored.
Caspian Sea is bounded by northern Iran, Southern Russia, western Kazakhstan and Turkmenistan, and eastern Azerbaijan.
Baku is the capital and largest city of Azerbaijan. Baku is located on the Caspian Sea.
China is the landlocked country that borders Russia to the south.
Iran
Russia, Kazakhstan, Turkmenistan, Azerbaijan, and Iran border the Caspian Sea.
Iran is located between the Caspian Sea and the Persian Gulf.
Uzbekistan is a landlocked country in Central Asia. Kazakhstan is bordered by the Caspian Sea but this sea is also isolated from oceans.
Azerbaijan is not a body of water. It's a country on the border of the Caspian Sea. Azerbaijan is in Europe and Aisa.
Iran.
Iran
Russia, Kazakhstan, Iran, and Turkmenistan are all large countries that border the Caspian Sea.
Kazakhstan, if the Caspian Sea coast does not qualify as a coastline..(The Caspian Sea surface is at places several meters below sea level and therefore can't be classified as a proper sea.) If indeed the Caspian Sea is counted, the largest landlocked country would be Mongolia