That's nice, but that such people exist is not remotely evidence that they were involved. Even if you buy the German newspaper's six men in a yacht theory, why

That's nice, but that such people exist is not remotely evidence that they were involved. Even if you buy the German newspaper's six men in a yacht theory, why weren't they caught? There was apparently a military exercise in the area at the time they would have placed the bombs. I don't think being a Gazprom exec gives you the skills to pull off an operation of this scale without anyone even noticing.