It's impossible to block open source software exports. Anyone in the entire world can download anything from anywhere; an attempt to block by country reflects a

It's impossible to block open source software exports. Anyone in the entire world can download anything from anywhere; an attempt to block by country reflects a lack of understanding of how the internet works. Blocking export of closed source/commercial software is more realistic, but still, the targets can always pirate or obtain what they want through a third party.