Russian Saboteurs Behind Arson Attack at German arms Factory in Berlin?

This is serious stuff! Or was it an accident? 

Is the Russo-Ukrainian War spreading to other parts of the world? It is already a World War III by any other name given how many countries are involved.

Russian Saboteurs Behind Arson Attack at German Factory  - WSJ Attack is a sign of the Kremlin’s more aggressive clandestine operations, security officials say