What's more is that Hersh's sources described that the US assisted in the initial, larger Kerch Bridge explosion which had initially temporarily disabled it in October 2022. "The Biden administration's role in both attacks was vital," he wrote in a Thursday Substack investigative article.

"Of course it was our technology," an unnamed US official told Hersh, referring to the sea drone which detonated under the vital bridge on July 17. "The drone was remotely guided and half submerged–like a torpedo."

The source cited is said to be a US intelligence official who is speaking out anonymously "from the point of view of those in the American intelligence community who don't feel they have the ear of President Joe Biden but should."

"Our national strategy is that Zelensky can do whatever he wants to do. There's no adult supervision," the US official complained.