What are the reasons for the strategic importance of Caucasus region in Russia?
Fisheries to the east provide food for most of Africa.
The United States could have been motivated by a few reasons... 1) The strategic location of Korea- Korea is located between Russia, China and Japan giving its position great strategic importance. 2) Communist Agression- This was a war caused by communist agression, and the US was no doubt afraid of a domino effect going off all throughout Asia.
There are two mountain ranges dividing Europe and Asia: The Ural Mountains divided Russia and Kazakhstan, ultimately the continents of Europe and Asia. The Caucasus Mountains divide Georgia and Azerbaijan, ultimately the continents of Europe and Asia. Armenia, another Caucasus State that doesn't touch the Caucasus, is a geo-political European country. The Caucasus also run through Russia, but do not divide the country between Europe and Asia in this part.