The Russians aren't always the innocents in this feud. My boss shared information about a Russian operation that cut electricity to a Chechen village in the middle of a sub-zero night, then blew the windows out of the village homes with a ground hugging supersonic pass of a jet fighter.
When the Islamists attack simply to force Islam on other people, I'm quick to denounce the behavior. What I see in this instance is a tit-for-tat blood feud. The Russians provoked the action by mining. Unspoken is the possibility that the mines themselves are a reaction to having Islamist homicide bombers at work in a Russian city.
The mines are a reaction to having Arabs, Turks and other Islamic jihadists entering Chechnya via mountains to fight a jihad the majority of the Chechen people have given up on.
All is not lost, at least the jihadis have Americans like you to defend them.