US spies have provided Ukraine with detailed intelligence about Russia's moves helping slaughter eight generals, 36 colonels and 300 officers.
It has dealt a huge blow to Vladimir Putin who lost his 35th colonel in Moscow last week during the Ukraine war.
Col Mikhail Nagamov, 41, from the sixth engineer-sapper regiment from the Yaroslavl region, died on April 13 "while performing a combat mission" in Ukraine.
