It would probably relate to this event: https://en.wikipedia.org/wiki/2014_Vrb%C4%9Btice_ammunition_warehouse_explosions https://en.wikipedia.org/wiki/2014_Vrb%

It would probably relate to this event: https://en.wikipedia.org/wiki/2014_Vrb%C4%9Btice_ammunition_warehouse_explosions https://en.wikipedia.org/wiki/2014_Vrb%C4%9Btice_ammunition_... At least Wikipedia already treats the involvement of Russian intelligence as a fact.