After watching this guy croak, I'm asking why he didn't simply write a suicide note. Ah, terrorists like proof of what they're buying and they like to view any counter attacks or methods of recovering the stuff. I suspect an attack on Russia very soon.
Don't bet on Russia as the target.
I want to know whether there is evidence of beryllium at the sites contaminated with polonium in this incident. Triggers for 'suit case' nukes use a combination of polonium and beryllium. This might have been a smuggling plot connected with an Al Qaeda/Chechen project to reactivate an old stolen or black-market Soviet suit-case bomb. There is not point in smuggling the trigger out of Russia if Russia is the target.
From Putin's FSB or the Sunni Extremists ? Russia is screwed in the long run. Islamic civil war or Stalin style dictatorship. No wonder so many Russians have been leaving.