CIA Warned Europe of Potential Attacks on Nord Stream Pipelines - The New York Times

The C.I.A. issued a vague warning in June to a number of European nations, including Germany, that the two Nord Stream gas pipelines that carry natural gas from Russia could be targeted in forthcoming attacks, three senior officials familiar with the intelligence said on Tuesday.

CIA Warned Europe of Potential Attacks on Nord Stream Pipelines - The New York Times

While some European governments were quick to charge Russian sabotage, American government officials said other possibilities also existed that could explain what happened.