Ball, Tom (March 10, 2022). „Spies accused of betraying Putin's Chechen units“. The Times. ციტირების თარიღი: March 13, 2022. ციტატა: „Chechen fighters loyal to the Kremlin are being betrayed by Russian spies who are leaking their whereabouts to Ukrainian forces, an aide to President Zelensky has claimed. Aleksei Arestovich said that the FSB was 'quietly passing on' information about the movements of Chechen units.“
