In our world Nuclear devices have only been used once, Hiroshima and Nagasaki, in 1945 in Japan near the end of WWII. They have the power to wipe out the planet with the accidental press of a button. The thoughts of Nuclear War have inspired Human imagination, Music, Video Games, Books and T.V series. They have caused people to be come paranoid and have consumed billions in state spending as well as a Cold War that spanned 34 years. Strange as it may sound, Nuclear weapons have prevented wars. When India and Pakistan both acquired nuclear weapons wars between them stopped, even if tensions remained high. But what if these weapons simply never produced? What would our world look like?
Point of Divergence
In 1945 during the Manhattan Project is developing the nuclear bomb, the concept fails and the project is abandoned, cited by President Truman as "dangerous to the well-being of every citizen of the United States". The idea of successfully splitting the atom remained constant in human civilization but all attempts failed.
ATL Vs OTL
In Our timeline nukes have prevented full scale wars and the likely WWIII.
World War Two
While many think the Bombing of Japan were the only thing that made them surrender, the Japanese were on the verge of collapse. The USA had been firebombing places such as Tokyo and the destruction of Military bases. They were collapsing economically and militarily. The Soviets, after the collapse of Germany, began helping in the fight against Japan, gaining some of their land. If nuclear bombs were never invented the Japanese still would have surrendered, but at a later point, possibly only a few months more at most. This would have meant that the Russians would have a large presence in the Pacific War, as well as gaining even more land and political dominance in Asia. This alone would change the Politics of the 1950s/60s. China's shape would also be affected as the Soviets would probley occupy large areas of Manchuria as well as other areas of Asia.
The 1950s and 1960s
In the 1950s Germany still would have been split. JFK may not have been elected and if he was his presidency would be very different . The Vietnam War would also be changed, as would the Korean War.