Writing for his Substack site, investigative reporter Seymour Hersh, 85, makes a very detailed claim that the U.S. was responsible for planning and executing the sabotage of The Nord Stream II pipeline under the Baltic Sea.
The pipeline was built to carry inexpensive Russian natural gas to Germany and perhaps a couple of other European countries. It was destroyed before it went into service.
On the other hand, the Washington Examiner reports that the White House and various intelligence and defense sources have denied Hersh's claims. The WE description of his article alleges it cites only one anonymous source.
I would add that the U.S seems to be the only actor which has a clear and obvious motive for the sabotage. Alleging any other national actor did it requires very convoluted logic and a disguised motive, which is not in itself proof that the U.S. was responsible.
I can imagine radical environmentalists would have liked to destroy the pipeline. It is unclear they possess the technical ability to accomplish it in 200+ feet of cold seawater.