Can I see your sources then as I've referenced where I got my information from.
https://www.amazon.com/Cold-War-New-History/dp/0143038273
Giving me the link to some random book tells me nothing. Your better off actually quoting, like this on the bit that the Soviet project began to take root in 1942, not 1943:
"[In April 1941] Stalin summoned Kaftanov and other experts, including Peter Kapitsa, a pupil of Ernst Rutherford, and asked their opinion. They said the work was important. Two of them said that to build the bomb would cost as much as the entire Soviet war effort - and the Soviet Union was cracking. But Kaftanov argued in favour of the pojrect, whatever the cost. Otherwise, the Germans might have the bomb -which is what all the intelligence told Stalin the British and Americans feared - while the Russians did not.
After some hesitation, according to Kaftanov, Stalin said: "We should do it."" -
Absolute War: Soviet Russia in WW2, Chris Bellamy, Pg 483.
"By September 1942, the Russians had picked Kurchatov as the right man to lead and manage the building of the Red bomb." -
Absolute War, Page 484.
February 1943 date is just the time it was made official in Soviet documentation on the matter, but as you can see work had already been underway since September.
Yet, it was also pretty clear NOT yet an all out effort to acquire the bomb, as the USSR was too busy fighting the Germans to manage that:
"Stalin [in 1942] had merely commissioned a modest investigation of the possibilities for a Bomb, not a Soviet-style Manhattan Project. By this stage, he had received intelligence that his enemy would not be able to build a bomb and that his allies might be able to do so. A full-blown Soviet project therefore seemed superfluous to the task of defeating Germany. The wartime Soviet programme existed almost entirely on paper. Scientists did not have the resources to move beyond theoretical calculations to practical experiments." -
The Bomb: A Life, Gerard J. Degroot, Page 131.
"The American experience demonstrated that it was not sufficient merely to understand how to build the Bomb - a hugbe industrial effort was also essential. This was not remotely possible [for the Soviets] during the war." -
The Bomb: A Life, Page 132.
That the movement to a all-out effort to build the bomb began only after the war ended is also well established.
"Exactly two weeks after Hiroshima, Stalin turned the makeshift wartime operation into a crash programme to build a Bomb. A short time later he told Kurchatov: 'If a child doesn't cry, the mother doesn't know what it needs. Ask for whatever you like. You won't be refused.' The fact that he could even contemplate this while his country lay devastated is testimony to his determination." -
The Bomb: A Life, Page 131.
And from your own links:
The Soviet atomic program during the war was puny compared to the Manhattan Project, involving approximately twenty physicists and only a small number of staff. They researched the reactions necessary to produce both atomic weapons and nuclear reactors. They also began exploring ways to generate enough pure uranium and graphite, and researched uranium isotope separation methods.
Work on the program sped up quickly in 1945, however, especially after the Soviets learned of the Trinity test. At the Potsdam Conference in July 1945, Truman told Joseph Stalin about the United States atomic bomb program for the first time. According to Truman, "I casually mentioned to Stalin that we had a new weapon of unusual destructive force. The Russian Premier showed no special interest. All he said was he was glad to hear it and hoped we would make good use of it against the Japanese."
While Stalin may have appeared uninterested, he privately told his top advisers to speed up work on the Soviet atomic program: "They simply want to raise the price. We've got to work on Kurchatov and hurry things up.”
The Soviet regime immediately stepped up their program. General Boris L. Vannikov (who has been compared to General Leslie Groves) headed an engineering council that oversaw the project. Its members included Kurchatov, M.G. Pervukhin, A.I. Alikhanov, I.K. Kikoin, A.P. Vinovgradov, Abram Joffe, A.A. Bochvar, and Avraamy Zavenyagin.
Following the bombings of Hiroshima and Nagasaki, Stalin called for an all-out crash program in atomic research and development. In 1946
Yuli Khariton was appointed by Kurchatov as the program's lead scientist. He was tasked with directing atomic research, development, design, and weapons assembly, and helped select and establish the site of the secret Soviet nuclear weapons facility, known as Arzamas-16 and nicknamed “Los Arzamas.”
On the relative importance of espionage:
"Implementing the stolen plans still required immense technical skill and a deep understanding of atomic processes. In addition, though the information was, as Ioffe claimed, always precise, Soviet scientists could not assume that it was. An immense amount of checking had to be done, since it was always possible that the Americans had intentionally released carefully constructed disinformation. And, in order to protect the secret of the stolen secrets, only the most senior scientists were aware that the designs had been pilfered. Most scientists went to their graves believing that their bomb was distinctively Russian." -
The Bomb: A Life, Page 128.
"Fuchs himself did not believe that his contribution was crucial. In his interrogation, he remarked that he was 'extremely surprised that the Russian explosion had taken place so soon'. In common with other [Western] analysts, he had assumed that the information he had given 'could not have been applied so quickly and that the Russians would not have the engineering, design, and construction facilities thatr would be needed to build a production plant in such a short time.'" -
The Bomb: A Life, Page 147
And again, from one of your own links:
Contrary to popular belief, there was no concrete "secret" behind the atomic bomb. The discovery of fission in 1938 meant that a nuclear chain reaction was possible and that the energy produced from this process could be used to produce a weapon of unusual force. Physicists like J. Robert Oppenheimer, Enrico Fermi, and Leo Szilard knew that it was only a matter of time before other countries were able to develop their own atomic weapons. The only secret behind the bombs lay in their specifications, material composition, and inner workings. Any government with the determination and the resources to develop an atomic weapon could do so within a matter of time.
When Klaus Fuchs's espionage was discovered in 1950, many believed that his actions had been essential to the Soviet bomb. Fuchs did pass along important information about the bomb's design and technical specifications, and the Congressional Joint Committee on Atomic Energy concluded that "Fuchs alone has influenced the safety of more people and accomplished greater damage than any other spy not only in the history of the United States but in the history of nations." However, there has been much debate surrounding the role of espionage in the Soviet Union's atomic program. Scholarship suggests that Soviet spying probably allowed the USSR to develop an atomic bomb six months to two years faster than they would have had there been no espionage
And that the rush to build an exact replica actually proved detrimental to the building of a Soviet stockpile:
"Beria was not remotely moved by the ideals that motivated his scientists. He was not an esoteric voyage of discovery but a practical quest to build a bomb in the shortest possible time. Therefore, he simply told his scientists to build an exact copy of the American bomb, the specification of which had been supplied by Fuchs and others. A specifically Russian design was cast aside even though it offered more promise than Fat Man.[Footnote here, when going to the bottom of the page to read it, it says:] When finally built and tested in 1951 (the second Soviet atomic test) it produced twice the yield, at half the weight." -
The Bomb: A Life, Page 135.
It should be noted that when the Soviets did embark on their crash program, they had their first reactor up and running in less then a year and a half: the first Soviet nuclear test reactor went critical on Christmas Day, December 1946 (
The Bomb: A Life, Page 144). The first production reactor was online by June 19th, 1948, a little under just three years after the crash program began (also Page 144). The Soviet program moved remarkably swiftly once the Soviets accorded it relevant priority.
The
real key setter for the building of the Soviet bomb is the acquisition of raw uranium ore. But the prospecting for that came hand-in-hand with the beginning of the full-construction program, so we can expect things like the Soviet discovery of uranium ore in Kazakhstan and the expansion of uranium mining in places like Taboshar, Tajikistan to also be duly accelerated.
the Soviet missiles took 20 hours
The Soviet R-7 ICBM took 20 hours to fuel. The Soviet R-7 is not the sum total of Soviet ballistic missiles in the late-50s and early-60s.