> Tupolev trying to build an identical copy without any blueprints. They actually did. It's called Tu-4: https://en.wikipedia.org/wiki/Tupolev_Tu-4 https://en.

> Tupolev trying to build an identical copy without any blueprints. They actually did. It's called Tu-4: https://en.wikipedia.org/wiki/Tupolev_Tu-4 https://en.wikipedia.org/wiki/Tupolev_Tu-4