In the Second World War were the USA and the Soviet Union allies against the Axis powers. Tensions grew between the Western powers (including the USA) and the Soviet Union and satellite states just 2 years after the war ending in a period called the Cold War, not earlier ending as in 1991. Both blocs were active in acquiring intelligence about their fleets and harbours-shipyards.
An item dealing with the movements in the harbour of Burgas, Bulgaria reported that in the harbour were lying 8 coast guard ships and 4 landing crafts and that small battleships and submarines were exercising outside the harbour.
Source
Published on www.archive.org, document numberCIA-RDP81-00280R001300030001-5
An item dealing with the movements in the harbour of Burgas, Bulgaria reported that in the harbour were lying 8 coast guard ships and 4 landing crafts and that small battleships and submarines were exercising outside the harbour.
Source
Published on www.archive.org, document numberCIA-RDP81-00280R001300030001-5
