Black Sea which are largely responsible for regional precipitation inputs and influence Mediterranean Sea Surface Temperatures (SST's). The relative strength of these systems also limits the amount of cold air arriving from northern regions during winter. Other influencing factors include the regional topography, as depressions and storms systems arriving from the Mediterranean are funneled through the low land around the Bosphorus, Pontic and Caucasus mountain ranges acting as wave guides, limiting the speed and paths of cyclones passing through the region. There are some islands in the Black sea that belong to Bulgaria, Romania, Turkey, and Ukraine: The Black Sea is connected
Black Sea Fleet the Western sphere of influence. Together with the advent of long-range nuclear weapons, this dramatically decreased the strategic value of any naval activity in the Black Sea. In the later post-war period, along with the Northern Fleet, the Black Sea Fleet provided ships for the 5th Operational Squadron in the Mediterranean, which confronted the United States Navy during the Arab-Israeli wars, notably during the Yom Kippur War in 1973. In 1988 Coastal Troops and Naval Aviation units of the Black Sea Fleet included: In 1989, the 126th Motor Rifle Division at Simferopol was transferred to the Black Sea Fleet from