another Christmas Muslim terror attack
If Da'esh
PR read PPRUNE, they'll be busy editing the claim video right this moment
Grauniad has this:
Russia’s RIA news agency, citing an unidentified security source, said preliminary data indicated the plane had crashed because of a technical malfunction, Reuters reported.
and I wouldn't be surprised.
The '154 apparently has a reputation of being a reliable aircraft, but the ones still flying are old & weary, and ru.mil kit tends to suffer from lack of maintenance across the board.