Now that Afghanistan is not available for them to train and perfect their techniques of mass murder, the attacks have become cruder and more amateurish.
The attacks on the West started before Gulf war one, each one more ambitious than the last, until 9/11.
Does anyone think they would ever have said, the West has suffered enough, let us reduce the scale of our attacks.
The Aghanistan operation, though poorly supported and often botched, has reduced their ability to commit mass murder.