Siemens did not sell centrifuges to Iran when it was during the full embargo. It did so earlier. Even then, sales of this equipment to Iran are done with coordination with the EU that does the footwork to insure the companies and avoid sanctions.
The Canadian government will in effect compensate you for these secondary sanctions though.
Because you're the one making the claim. You claimed that you need "financial instruments" to "insulate" yourself. Do you have an example of this or not?
> It's well documented that the US has secondary sanctions on Cuba
1) That's about private lawsuits, not government sanctions, "secondary" or otherwise. 2) It only applies to people who directly traffic in confiscated U.S. property, not to generic trade with Cuba. 3) No one has ever successfully pressed a claim or collected any compensation under that statute.