Everyone has probably caught the bits and pieces of headlines on the former Russian spy, Alexander Litvinenko, who was poisoned and died last week. There is little conclusive information and the assassination has been linked in the press both to the murder of Russian journalist Anna Politkovskaya and the Yukos affair. It’s a James Bond style mystery, but in that great BBC news voice.

The interesting part is that he was poisoned with polonium-210, an extremely rare and highly radioactive element. It is even rarer in quantities that could be used for poisoning, since they would have to be manmade. Most of the news sources are quoting experts as saying that the Po-210 could have only been produced in major laboratory. This point makes the theories (which I will describe below) about Litvinenko’s death very troubling from the standpoint of securing access to radioactive materials.
What’s Polonium-210 and where do I get some?
Polonium-210 is highly radioactive with a half life of 138 days. A very small amount, about the size of a pin head, would be enough to kill an exposed person. Exposure means swallowing or inhaling; although polonium-210 releases large amounts of alpha particles as it decays, these particles would not for example be able to penetrate your skin. (Take a look at this basic overview on Po-210 which the Royal Society of Chemistry put up on the web recently.)
Polonium-210 is often used as a neutron initiator in nuclear weapons, although it does have some civilian uses (batteries for satellites). Iran was found to have done Po-210 experiments in 2004, raising IAEA concerns. Polonium-210 of a substantial quantity would had to have been produced with a particle accelerator or nuclear reactor. Here is where all eyes turn to Russia. (Oh, beside of course Litvinenko also being a Russian spy and blaming Putin for poisoning him. That’s too obvious.)
The Observer (UK) points out why Russian institutes seem like a like source:
Such material, it is believed by experts, could only have come from the massive nuclear structures of the old Soviet Union where, during the collapse of the empire, security was often sacrificed. Polonium can only be gained from such reprocessing plants or equally complex nuclear research plants. You cannot buy this stuff from local criminals.
The speculations about this case generally fall into two groups: intentional the Russian government (or governmental organization) or intentional by someone who just had it out for this guy. (There is no evidence yet that the material did come from Russia. They detected Po-210 in Litvinenko’s body, the restaurant where he ate day he got sick, a hotel, his home, and a few other locations.)
Neither of these theories makes me feel any better about the security of radiological materials.
Assassination Theory 1 – The FSB, or someone otherwise acting on orders of the Kremlin.
The Kremlin wanted Litvinenko gone, they gave the word to someone (FSB, etc) and voila. The access to the radioactive material was easy though a number of Russian nuclear facilities.
There are several problems with this theory. If the material does turn out to be Russian, and traceable, then why would any government sponsor have chosen this particularly self incriminating method of assasination? The Moscow Times quotes Alexander Pikayev on this point:
[Alexander] Pikayev said that if a Russian intelligence agency had wanted to kill Litvinenko, it would have been foolish to use polonium because its source could probably be traced.
This of course does not rule out the FSB involvement. They could have just gotten non-Russian polonium-210, or even acted without Kremlin directive or approval. The government-sponsor or government agency theory leads to two possible conclusions: 1) Russian secret services like using overly elaborate and exotic assasination techniques 2) to high powered buyers, radioactive materials are available from either in Russia or perhaps even other sources. Since polonium is very difficult to make, only countries with highly developed nuclear programs have this capability. So where else did it come from?
note: Jeffrey pointed out that polonium-210 may be very difficult to detect, especially in a poisoning case where symptoms may suggest other substances, making this not such a crazy sounding approach after all. Perhaps those carrying out the attack actually hoped that it would leave not evidence, but miscalculated on dosage.
Assassination Theory 2 – One of Litvinenko’s many many enemies
No one denies that Litvinenko had many enemies. Perhaps one or several of these enemies acquired some polonium-210 from a less than perfectly guarded or bribe-able source, and carried out the attack independently.
However, some experts argue that this kind to lone attack would not be possible without government sponsorship and sophisticated technology.
“No individual could do this,” said John Large, an independent nuclear consultant. “What you are talking about is the creation of a very clever little device, a designer poison pill, possibly created by nanotechnology. Without nanotechnology you would be talking about a fairly big pill, a pea-sized pill. Either way you are looking at intricate technology which is beyond the means and designs of a hired assassin without a state sponsor.”
So far, experts have not found prior cases where polonium-210 was used as a poison.
Going with the non-government independent assassin theory is perhaps even more disturbing than FSB agents running around poking people with umbrellas or what not. It means that an extremely well prepared person or group of people managed to get their hands on a deadly radioactive substance which most seem to think is nearly impossible to acquire.
Regardless of which theory is true (and of course there are others), this incident also shows that it was clearly possible to smuggle polonium-210 into the UK. (Alpha particles do not set off radiation detectors.)
Lastly, an interesting side note. The Russian press is covering this story a bit differently. The papers are generally not touching the theory of a Kremlin sponsored assassination. Rather, they focus on other theories including some of their own, involving even Chechen militants, and comment on the British investigation.
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