Veteran journalist and author Joseph C. Goulden offers a review in the Washington Times of Mark Urban’s The Skripal Files.
Speaking to reporters in December 2010, Russian President Vladimir Putin denied that his spy agencies had assassination squads that targeted defectors. But he voiced an ominous warning. “Whatever thirty pieces of silver those people may have gotten, they will stick in their throat.”
The attack matched earlier Russian murder operations, notably the poisoning death of defector Alexander Litvinenko in 2006.
You can read the rest of the review via the below link: