Thanks to the provision of armaments and other support to the Mujahadin by the Americans, when the USSR was in Afghanistan, the withdrawal of Soviet troops has led to the present situation across the middle east.
As one who has argued for years that had the Muslim problem been in Mexico, the USA would hardly have welcomed a reverse situation.
That said, virtually all of the present Islamic fundamentalism can be directly traced to American foreign policy, ever since they wormed their way in front of British interests in Saudi Arabia.
Not that our behaviour has done much to pacify the region, the Balfour declaration which directly led to the formation of Israel, being a classic example of our own failures in the region.

Further failures by the USA in supporting British and French incursions into Egypt during the Suez crisis, and Persia, when the fundamentalists gained power, also heaped further feelings from the Islamic world, they it could do as it liked against the west.
Saddam Hussein I ignore, for he was a distraction when taking on the Iranians, which just delayed matters a while.

So when the Russian capital is attacked, it can, over the long period this matter has been proceeding, be indirectly laid at the foot of American and British foreign policy, over the last half century or so.

On a personal basis, I hope the Russian bear raises his fist and smacks the region down, maybe then we can all sleep peacefully in our beds, knowing that those maniacs with Allah for their champion have been cauterised to extinction for once and for all.
It seems WE are incapable of taking them down and out, as our apparent impotency in Afghanistan would indicate on present results so far.