It took about 4 years from America going public with the existence of nuclear weapons (Hiroshima) to the first Soviet nuke. If a technology is hugely impactful (so that money is no object) and proof of concept is public knowledge, three years is a really long time.
It took about 4 years from America going public with the existence of nuclear weapons (Hiroshima) to the first Soviet nuke. If a technology is hugely impactful (so that money is no object) and proof of concept is public knowledge, three years is a really long time.