The New York Times, citing American officials, wrote that Kiev had not informed Washington in advance that forces affiliated with the Ukrainian security service were planning the attack.
A Pentagon official also told the newspaper: The recent Ukrainian attack showed that Kiev is capable of targeting almost any location in Russia.
Several American and European security officials also told the New York Times that about 20 Russian strategic aircraft were likely destroyed or severely damaged.
They claim that Russian losses included 6 long-range strategic bombers and 4 Tu-22 bombers.
US officials said Russia is expected to carry out a major retaliatory operation against Ukraine in response to Kiev’s recent attacks.
