Have you not seen the paperwork that come with high end computer equipment - I helped by some Pr1me gear back in the day and along with the kit came a sheaf of paperwork explaining just how much shit you would be in if you reexported it to one of the country's on the naughty list.
I don't agree with the general theme of restricting things in this way. However, to be fair, powerful computing technologies are sometimes restricted from export to certain countries. It was only fairly recently that this sort of regulation was eased a bit wrt Iran.
