The
brutal fact is there is no way, I mean
no way would USA have allowed Pakistan even sniff "nukes". Think of Iran, Iraq. If in 2001 America could threaten "bomb you to stone age" and cause Musharaf to quiver in fear please tell me what would have happened in 1980 if USA had threatened "bomb you to stone age" or give up the nuke idea.
The reality was trhe Afghan jihad and million dead Afghans under Soviet attack gave Pakistan a licence to continue to build the nukes and through out the 1980s even recieve $ billions and advanced weapons from USA like F-16s etc. USA turned a blind eye to Pakistan's nuke project. Now you can ask yourself the question was the trouble Pakistan got out of the Afghan adventure worth it?
Well, it depends what premium you give Pakistani nukes ....
Afghan war helped Pakistan keep nuclear option: US papers
WASHINGTON: Torn between preventing Pakistan from going nuclear and fighting the Soviets in Afghanistan, the United States appears to have decided that pushing the Russians out of Kabul was more important, shows a set of documents released by the US State Department.
Official US memos and letter — released under an arrangement to make public official documents after 30 years — show that Chinese leader Deng Xiaoping (in office from 1978 to 1989) also played a key role in convincing Washington to continue to support Islamabad despite its nuclear programme.
https://www.dawn.com/news/1453065