"Russian Scientist immigrated to the United States and published a book describing Novichok substances in 2008", left the east as an asylum seeker, magically became a multi-millionaire over the next couple of years, but not due to book sales. Perhaps someone was paying him to develop novichok for them?

https://archive.fo/psQ0D :

Spiez Laboratory on Twitter: "Only OPCW can comment this assertion. But we can repeat what we stated 10 days ago: We have no doubt that Porton Down has identified Novichock. PD - like Spiez - is a designated lab of the OPCW. The standards in verification are so rigid that one can trust the findings. #Skipal… t.co/e7CkOMQBmR"

https://archive.fo/psQ0D :

Spiez Laboratory on Twitter: "Only OPCW can comment this assertion. But we can repeat what we stated 10 days ago: We have no doubt that Porton Down has identified Novichock. PD - like Spiez - is a designated lab of the OPCW. The standards in verification are so rigid that one can trust the findings. #Skipal… t.co/e7CkOMQBmR"

https://archive.fo/oTfyu :

Russia's Lavrov Says Skripals May Have Been Poisoned by Substance Russia Never Made - The New York Times

https://archive.fo/oTfyu :

Russia's Lavrov Says Skripals May Have Been Poisoned by Substance Russia Never Made - The New York Times

https://archive.fo/FSyNW :

Russia: Trace of Western-made nerve agent seen in UK samples

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