The Brussels terrorist attacks opens up a lot of questions to people who do not study Islamic terrorism on a regular basis. Media will portray Brussels as a regular European town struck by some outsiders. That is furthest from the truth. Europe has been a breeding ground for radical Islamists for several decades through mass migration.
Mark Steyn, who has written on the changing demographics in Europe for well over 15 years, addresses Brussels at the 5:30 mark in the video below. You can access all four segments at Michelle Malkin’s website here. I recommend watching all four videos as he talks about immigration not just for Europe, but America as well.