Many western company's do business with Iran.  
The Iranians have some (oil)money to spend and are looking for stuff to arm their teeth.

So some cowboy's, and also some honest sellers try to make some money.  In Iraq pre-invasion time, the same happened.

But what can be sold to Iran and what not?

There is the legal barrier : general laws about exportation , exportation of arms and arm-related materials in particular.

Then there is political sensitive stuff.

There is also security....NATO and CIA are watching us.

On jan.30 in Belgium the chief of Security of the State had to resign . The official reason was that he overlooked a memo from the CIA(!) in wich they announced that a Belgian factory was selling sensitive material to Iran, endagering security.

In all the political wabeladoo who was responsible for what that Belgian factory exported succesfully their stuff, a isostatic press machine (specialists around here?).

This story was as far as I know not covered in foreign press.  In the Belgian press so far I saw nothing about this German spy-story.

I Think we will see happen things like that on a regular basis. Its about lots of money, lucrative opportunities, political rivalry in the grey zones
of our democracy's.

The struggle of man against tyranny is the struggle of memory against forgetting.(Kundera)