From: Adam 

Mark wrote:
> I've noticed a few dribs and drabs here and there (nothing concrete, nor
> worth linking to at this point) that the dead spy may have been the one
> smuggling the stuff out and may have had a bit of a fatal mishap in his
> handling of it, then figured may as well play the hand out and accuse Putin
> since he was soon to be dead anyway.
>
>

WRT smuggling polonium:

http://www.theregister.co.uk/2006/11/29/polonium_available_online/

As a radioactive, it's so innocuous that:

"Polonium210, the radioactive isotope fingered as the substance used
to off exiled Russian KGB spy Alexander Litvinenko, is available to buy
online for just $69 plus shipping and handling.

New Mexico firm United Nuclear Scientific Equipment & Supplies offers a
sample of radioactive element on its website, as part of its aim of putting
the "fun back into science"."

So smuggling is a of a stretch.

Still needs a great deal of knowledge wrt the dosage though.

Adam

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