We do not owe a single immigrant the right to stand aloof and disloyal to his new homeland. We will tolerate it. However his children must become good citizens and that is best achieved by conversion which blocks inevitable attempts to radicalize.
It becomes very easy is your first name becomes Martin. One thing i have learned to appreciate is the complete willingness of the Chinese to adopt local naming knowing full well that their full Chinese name is unintelligible to the European ear. It works very well. It just means that you have two names.
Perhaps we need to insist.
At a Berlin church, Muslim refugees from Iran converting to Christianity in droves