Trust me I have studied Industrial/enigneering design (hope it is the correct term in English) and R&D is NOT synonymous with weapons. That is such a ridiculous assumption that I dont even know what to say. Sure arms need to be designed and tested too. But that makes as much sense as saying weapons are made from metal so a bike or a bathtub is a weapon too..
On a side note, on of of our course we built fighting robots :D anyone familiar with robotwars?