Of course, you can never really know what happened, as Russia is shrouded in secretcy.  In fact, it was my initial opinion that the Russian govt probably blew up the planes themselves - whether accidentally or on purpose.

And take notice that this Sunday Chechnya has their presidential elections.  Terrorists have been trying to pull a Madrid in order to influence that election, which is to replace the former president who was killed in a bombing.

Keep your eye on this one, folks.