I came across an article on AOL news today about spy weapons and how they have been used.  I think you may find this information interesting (excerpts):


POISON UMBRELLA

The Bulgarian Secret Service had a problem with dissident journalist Gegori Markov.  They couldn't just shoot him without suffering public outcry, so with the help of the KGB, they developed an umbrella with a tiny gun at the tip, which shot a thin metal pellet filled with poisonous ricin.  Markov felt what he thought was a bee...
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