Polonium poisoning: If Yasser Arafat was murdered, how will they know? -

Polonium poisoning: If Yasser Arafat was murdered, how will they know? - Slate Magazine

I would have thought that arsenic in the food would have been much easier and very much cheaper than sourcing and buying Polonium. Admittedly the exotic is harder to trace, as happened with the Russian, killed in London,some years ago.