U.S. learned of detailed attack plans months before the explosions.

At the time, the trail led to an elite Ukrainian unit. The plan is said to have been very detailed – and has great similarities with the actual attack in September. In recent months, there have been growing indications that Ukraine could be behind the detonations, including through investigations by German authorities. The Washington Post now refers to secret documents allegedly shared by US National Guardsman Jack Teixeira on the Discord chat platform.