He didn't say that AT ALL!
But it is a matter of fact that no president since 1945 has brought us as close to nuclear Armageddon than Dementia Joe and his advisers, and that includes the Cuban (Turkish) missile crisis of 1962.
(I know that understanding plain English is becoming a lost art, what with spending so much time in school learning the names of all 57 genders and hundreds of races.)
Of course Putin is to blame for the invasion of the Ukraine, just as a bank robber is to blame for robbing a bank — but the cop who’s napping in his car in front of the bank isn’t doing anything to help prevent it.