Without any possibility that your father might have been part of the crew that made the decisions that trigger the sanctions.

I accept it is very unlikely, but without knowing the specifics, possible.

You on the other hand responded with possible violence at the mere suggestion.

Yes, some good people work for MS.
Yes, some good people work for drug companies. I'd be in deep shit without a variety of drugs handy at all time (heart, blood pressure, pain killers, etc), so I'm very grateful to the good people working at drug companies.

So what. It doesn't stop a reasonable person from being wary.