https://m.youtube.com/watch?v=9sx2YmSXDy8
I made a thread about this some months ago, but it didn't get a lot of traction. It's just interesting that this didn't become a big deal in Russia, or no outrage by the public, considering that it's pretty obvious who did the bombings.
Is it? The attempted Ryazan bombing did not look at all similar to any of the bombing, starting from the fact that the material inside the bags could not explode. Of course, a documentary funded by Putin's enemies would omit inconvenient facts like these...
Basically, there is the principle that for amazing accusations amazing evidence is needed. Since it can't even be proven that in the one case with FSB links there was an actual bomb, this is obviously not enough.
You have been brainwashed by the Putin propaganda machine. Is it a coincidence that right after the FSB agents get arrested for trying to bomb an apartment complex they immediately announce that it was just an exercise, and that the president nor some of the local officials were not aware of this supposed "exercise". Also, how do you know that the bags were not filled with explosive materials?
And you've been brainwashed by the anti-Putin propaganda machine. Your argument does not work. If Putin was aware of the plot, he wouldn't have reacted in a way that made him appear guilty. At the time the FSB was in such chaotic situation that a section carrying out an exercise without authorization was far from unlikely. In fact this chaotic situation was a good argument against them being able to carry out a conspiracy on this scale, as
pointed out here, along with several other significant objections against this theory.
As for the supposed explosives,
this was announced the next day after the bags were discovered. This happened long before the announcement about the incident being a training exercise and by the local police force which had found the bag, so there is little reason to doubt these findings.