Nord Stream pipeline mystery object prompts investigation and invites from Denmark and Kremlin.

Denmark has invited Gazprom, the Russian energy giant and majority stakeholder of the Nord Stream 2 pipeline, to help recover a mysterious cylindrical object found on the seabed next to the pipeline, which could provide clues about the sabotage attacks that struck parts of the pipelines in September 2020. Russian President Vladimir Putin said experts believe the object could be a signal antenna used to trigger an explosive in that section of the pipeline. The investigation is ongoing, and it is still unknown who was responsible for the sabotage.