I knew that
Argentina previously had a nuclear weapons program, and was looking online for more info, and found a good and concise description
HERE
In the right margin, you can click on summaries of other nations' nuclear arsenals, or their realized or aborted ambitions, such as
Libya, Algeria, Brazil and
South Africa.
It's reassuring how many had nuclear ambitions for a period, and well-realized nuclear facilities, who with a new government aborted their nuclear programs, and turned them over to international inspectors for dismantlement.
The
U.S. and
Russia both have listings as well.