he US warned several European allies over the summer, including Germany, that the Nord Stream 1 and 2 pipelines could face threats and even be attacked, according to two people familiar with the intelligence and the warnings.
The warnings were based on US intelligence assessments, but they were vague, the people said – it was not clear from the warnings who might be responsible for any attacks on the pipelines or when they might occur.
The CIA declined to comment.
Der Spiegel was the first to report on the intelligence warnings.
On Monday, leaks were discovered in the pipelines, prompting investigations by European authorities that determined powerful underwater explosions had occurred just before the pipelines burst in several places.
US national security adviser Jake Sullivan and NATO Secretary General Jens Stoltenberg have now both characterized the incident as an act of sabotage, but European officials have not yet publicly identified a culprit.