Russian President Vladimir Putin said Thursday that he and U.S. President Joe Biden should hold live online talks in the coming days after Biden said he thought the Russian leader was a killer and diplomatic ties sank to a new post-Cold War low.

Putin, speaking on television, cited a Russian children's playground chant to scathingly respond to Biden's accusation with the comment that "he who said it, did it.”

In an ABC News interview broadcast Wednesday that prompted Russia to recall its Washington ambassador for consultations, Biden said "I do" when asked if he believed Putin was a killer.