1. Lack of Trust: The primary reason for not sharing the atomic bomb plans with the Soviets was likely the lack of trust between the two countries. The US may have been worried that the Soviets might use the atomic bomb against them or might seek to develop their own atomic weapons, potentially disrupting the balance of power.
2. Secrecy: The Manhattan Project, which developed the atomic bomb, was shrouded in secrecy. The US government may have been concerned that sharing the plans with the Soviets could lead to leaks and compromise the secrecy of the project, potentially endangering its success.
3. Diplomatic Tensions: The US and the Soviet Union had divergent geopolitical interests even during their alliance in World War II. The US may have been concerned that sharing the atomic bomb technology could give the Soviets an unfair advantage in postwar negotiations and influence the balance of power in their favor.
4. Postwar Dominance: The United States may have also wanted to maintain its monopoly on atomic weapons to ensure its dominance in the postwar era. By keeping the Soviets unaware of the progress and plans for the atomic bomb, the US could maintain a strategic advantage and use its nuclear capability as a deterrent against potential adversaries.
5. Political Ideology: The US and the Soviet Union had fundamentally different political ideologies, with the US representing capitalism and democracy and the Soviets representing communism. Sharing sensitive military technology with a country with such differing political views may have been seen as a potential security risk.
These inferences are based on historical context and the known tensions and dynamics between the US and the Soviets during World War II.