Do you think that Ukraine is not involved in the explosions in Bryansk? Then it is doubly incomprehensible to me why you are dragging offtopic into this topic, and even falsely accusing me of this when I talk about the role of Poland in this story (which, in my opinion, is very interesting and quite significant).
Two possibilities that I think are most likely: Ukrainians did it; or corrupt Russian generals are trying to mask the extent of their corruption in the face of humiliating failures in Ukraine (see all that fuel... it burned, we definitely didn't steal half of it before this unfortunate fire). Either way this is a direct consequence of the war in Ukraine.
So is the alleged "plot" - a very clunky attempt by FSB to deflect from the real news... I mean seriously, a t-shirt with swastika on a secret mission in a foreign country? LOL
Now please find something "incriminating" about Finland or Monaco because obviously they're involved somehow.
Do not worry about the professionalism of the FSB, they have extensive experience in countering terrorism. Let me remind you that the Winter Olympic Games in Sochi in 2014 were held against the backdrop of the blazing Maidan, and geographically it was very close. However, they passed quietly and without serious incidents.
I think it is in the interests of Russia that the hostilities against the Armed Forces of Ukraine end faster, Ukraine slips into the tactics of sabotage and terrorist attacks, and then a very complex and large-scale military special operation will turn into an ordinary counter-terrorist operation, in which Russia has already eaten more than one dog.