Question Author
//Rebecca Morelle Science reporter, BBC World Service
The Swiss scientists were extremely cautious about their findings.
Testing for polonium 210 so many years after Yasser Arafat's death is fraught with difficulties.
It is a very unstable element, with a half-life of 138 days.
That means after four months, the amount of polonium in a sample would have halved; after a year there would be just one eighth of the original amount; and after the eight years since Mr Arafat died, there would be a vanishingly small fraction remaining.
This adds huge levels of uncertainty to any findings - as does the fact that polonium is also found naturally in the soil and air.//
"Vanishingly small fraction remaining" eh? That makes we wonder how massive the dose must have been, for detectable traces to still be hanging around.
//f he were poisoned, it's equally as likely to have been carried out by palestinian hands as it is anyone elses. //
Maybe so. The difference being that they would have to source it from the Russians. Since Litvinyenko, it's now well known that this is a Russian specialism and it just looks clumsy for them to betray their level of interference in the country in this way. Makes far more sense to assume it was the Israelis, who are equipped to produce this stuff.