This twat should never have got through security.
The liquid bomb plotters would have got through, and would have killed thousands in a single day.
They were thwarted by intelligence. They will have learned from the defeat and made their communications more secure.
Given time they will improve their attacks and acquire better technology.
Eventually they will get nuclear devices.
Nothing we can do will make them decommission and live in peace with the infidel.
They will go on until they are somehow stopped.