Russia’s invasion of Ukraine appears not to be going according to plan, and President Vladimir Putin seems intent on blaming his old colleagues at the Federal Security Bureau (FSB) – the intelligence agency successor to the KGB – for the quagmire.

Putin reportedly purged more than 100 agents from the FSB, and his government sent the head of the department responsible for Ukraine to prison.

About 150 FSB officers have been dismissed, The Times of London reported Monday. The ousted agents belonged to the Fifth Service, a division that Putin – then director of the FSB – set up in 1998 in order to carry out operations in the countries of the former Soviet Union, aiming to keep those countries in Russia’s orbit.