"ONE article (till now) doesn't say your right.
But why would Al Qaida attack Russia, is this a "enemy" of them?
And why didn't they used the planes for purposes as 9/11?"
1. "why would Al Qaida attack Russia, is this a "enemy" of them?"
Yes they are... The Russians are fighting In Chetchinia, also Bin Laden has stated that all crusader nations (all Christian nations) are sworn enemies.
2. "And why didn't they used the planes for purposes as 9/11?"
Why is simple... It takes far less effort to get a bomb onboard rather then training someone as a pilot.
These terror attacks are just another reason why it is time to crush radical Islam once an for all. If these people want to meet Allah, then lets facilitate it. Perhaps this may be the wake-up call for the Russians to stop screwing around and to get serious. The Germans have a wonderful saying that I love: "Eisenhart" (hard as Iron). Perhaps it is time for Russia to become Eisenhart with terrorists.
All we can do however is to say a prayer for the unfortunate souls lost and their families.