Doing some calculations is doing some calculations
Driving for bank robbers or doing some calculations for the mob can be a crime, if driving or doing calculations was helping them to commit a crime and you knew it.
> even if he tried to physically get into buildings and steal documents in order to expose warcrimes I would say that they should let him free.
That's your opinion.
I'm not saying you are wrong in principle, but that's not how law works.