There was the timber hauling truck converted into an ICBM launcher. With the deforestation apparently happening in North Korea it probably wasn't the best thing to sell them regardless.
I'm not sure what your point is. I can see you make two diametrically opposed arguments with that example:
A) Even seemingly harmless tools can be turned into dangerous weapons and they've done so before, so the best course of action is to not support them at all because they'll just turn around and try to hurt us.
B) Even seemingly harmless tools can be turned into dangerous weapons so there's no point in obsessing whether what we give them could be used for nefarious purposes as they'll just come up with a way to hurt us if they want to anyway.
A) Even seemingly harmless tools can be turned into dangerous weapons and they've done so before, so the best course of action is to not support them at all because they'll just turn around and try to hurt us.
B) Even seemingly harmless tools can be turned into dangerous weapons so there's no point in obsessing whether what we give them could be used for nefarious purposes as they'll just come up with a way to hurt us if they want to anyway.