The thing is, on the engineering level, one can only do so much. You may design the most beautifully controlled high precision weapon with all the interlocks and whatever.
Nothing of that matters if layers above you casually bribe people left and right in order to more freely sell to even worse people than what your democratically elected leaders decided were OK - and that first set of prospective customers are probably not so pretty in the first place, because you know, realpolitik and trade-offs. :-/
