It's s relatively moot point anyway, in that an airport's just an example (albeit a pretty topical one, obviously). The point is, if there's sufficient will from radicalised individuals to commit such acts and a growing ability to avoid intelligence efforts, it could happen pretty much anywhere...
The trouble is, if the problem of radicalisation within Islamic communities is as extensive as some on this thread have suggested, it's hard to see the problem not getting significantly worse from here on in.
One of the things I keep hearing about yesterday's attacks is how 'sophisticated' they...