Stalin, annoyed and frustrated by developments, decided to probe Western resolve at an early opportunity. Soviet representatives proposed the formation of a united German government. The condition for this would be Germany’s demilitarisation. Stalin seemed to want either a communist or a neutral Germany as his further aim. He also aspired to an increase in reparations to the USSR. On 24 June 1948 Stalin started a blockade of the American, British and French zones of the city. Unable to secure the kind of Germany he found acceptable, he opted to cut off the eastern zone under the USSR’s occupation from the rest of the country. The Soviet Army patrolled the border. Confrontation was inevitable, but Stalin gambled on the Western Allies being unwilling to risk war. He miscalculated. The Americans and British flew in supplies to their sectors of Berlin, and it was Stalin himself who had to decide whether to begin military hostility. The Berlin airlift continued through to May 1949. Stalin gave up. Western resolve had been tested and found to be too firm. Relations between the USSR and the USA deteriorated. A Western initiative inaugurated the Federal Republic of Germany in September 1949. In October the Kremlin sanctioned the German Democratic Republic’s creation in response.
This was a turbulent environment. Like everyone else, Stalin was surprised by particular events and situations, and much of his time was spent on reacting to successive emergencies. Yet nothing happened which challenged his general operational assumptions about global politics. He did not expect favours from the Americans, and the Marshall Plan confirmed his darkest suspicions. The phrase used by Zhdanov at the founding Cominform Conference about the existence of ‘two camps’ in perpetual, unavoidable competition appeared prophetic. First to form an overt military alliance was the capitalist camp. The North Atlantic Treaty Organisation (NATO) came into existence in April 1949. Under the USA’s leadership it included the United Kingdom, France, Italy, Canada, Belgium, Holland, Portugal, Denmark, Norway, Iceland and Luxemburg. Greece and Turkey joined three years later and the Federal Republic of Germany in 1955. Most countries in North America and western Europe adhered to NATO: it was a mighty and coherent alliance with the obvious but unstated purpose of seeing off any Soviet attack; and for all its European members its great virtue lay in binding the American government and military forces into their endeavour to keep the Soviet Army behind the Iron Curtain. In 1936 there had been an Anti-Comintern Pact; in 1949 an Anti-Cominform Pact had been established in all but name.
Western security concerns were increased on 29 August 1949 when Soviet scientists successfully tested their own A-bomb. Beria had used the ebullient Igor Kurchatov as the technical chief of the project. Kurchatov assembled a team of capable physicists. Soviet intelligence agencies handed over secret material taken by their agents from the Americans, and this hastened progress. The quest for uranium was facilitated by the consignment of hundreds of thousands of repatriated POWs to the mines in Siberia. Few survived the experience. By mid-1949 the USSR, from its own mines as well as from deposits in Czechoslovakia, had acquired sufficient plutonium and uranium-235 to go ahead with the construction of a Soviet bomb.9
Stalin took an active interest. The main figures in the research project were called before him in a lengthy meeting. Each had to report on his progress, and Stalin fired questions at them. Mikhail Pervukhin had to explain to him the difference between heavy water and ordinary water.10
He told Stalin what he needed to know. Not having studied physics at the Tiflis Spiritual Seminary, the Leader started with only the most rudimentary grasp of the scientific principles. His ignorance had earlier been downright dangerous for the scientists. Having recently re-read Lenin’s