A recent investigation revealed that mystery fires involving parcels at courier companies in Poland, Germany, and the UK were part of a test run by Russian military intelligence to sabotage cargo flights to the US and Canada. Polish prosecutors announced the arrest of four individuals connected to the scheme, which involved incendiary devices posing as consumer products. The incidents, which occurred in July, are believed to represent a broader orchestrated effort by Russia, facing allegations of similar activities in Europe. Security officials remain vigilant amid escalating tensions surrounding Ukraine.