So for example just look what they've done from a simple airplane crash in Smolensk in 2010.
The Polish conservative side made a whole political movement based on totally inconsistent conspiracy theories (very much like the MH17 lunacy in Russia).
Russian side quickly started playing divide et impera, keeping the airplane wreck in Russia under the pretext of "ongoing investigation" (still in 2020!).
Where's any space for pan-Slavism here?