You don't know what is in their hearts and minds and what they say to each other when you are not in the room.not one of them told me that they didn't love living in Canada.
The U.K. believes this is not a "lone wolf" attack but there is a wider network that is ready to strike imminently. Bear in mind that they have a potential pool of 4 million recruits and all they need is less than 10% to create mayhem.