Severnaya Zemlya broader Shokalsky Strait Bolshevik Island from October Revolution Island. Both straits connect the Kara Sea in the west with the Laptev Sea in the east. This archipelago encloses the northern limits of the Kara Sea on its western shores, together with Novaya Zemlya, located roughly to the southwest. The big rivers Ob and Yenisei, among others, flow from the south into this marginal sea area of the Arctic Ocean, with their abundant waters contributing to a climate with relatively high precipitation despite the prevalent extreme cold temperatures of the high latitude. The Laptev Sea, where the mighty Lena River steadily
12th Chief Directorate Another task of the 12th GU MO is to prevent so-called "nuclear terrorism," but this is a relatively modern task, which did not exist formerly. Besides these nuclear arsenal bases, the 12th Chief Directorate maintains several nuclear weapons research institutes in Moscow and in Sergiev Posad, near Moscow, with their subsidiaries located at nuclear testing grounds in Semipalatinsk-21 and on Novaya Zemlya Archipelago, and in several other cities (Saint Petersburg, for example). It also maintains a separate research institute tasked with developing nuclear explosions detection technology. Another function of the 12th GU MO is to serve as a link between