When the Nord Stream pipelines carrying natural gas from Russia to Germany were damaged last September, U.S. officials were quick to suggest Russia had bombed its own pipelines.

But according to a new report by the legendary investigative journalist Seymour Hersh, it was the U.S. Navy that carried out the sabotage, with help from Norway.

Citing a source "with direct knowledge of the operational planning," Hersh writes on his Substack blog that planning for the mission began in December of 2021.

The White House and the Norwegian government have since denied the claims. Hersh joins us for an in-depth interview to discuss his report and says the U.S. decision to bomb the pipelines was meant to lock allies into support for Ukraine at a time when some were wavering.

"The fear was Europe would walk away from the war," he says. Hersh won a Pulitzer Prize in 1970 for his reporting on the My Lai massacre. His reporting on CIA spying on antiwar activists during the Vietnam War era helped lead to the formation of the Church Committee, which led to major reforms of the intelligence community, and in 2004, he exposed the Abu Ghraib prisoner abuse scandal in Iraq.