Islam encourages their followers to cut themselves off from their neighbours who worship in a different way or agnostics.
https://www.thereligionofpeace.com/p...hristians.aspx
Klein Verzet: The Quran doesn't want integration
https://www.telegraph.co.uk/comment/...-is-a-sin.html
https://www.quora.com/Does-Quran-not...s-common-sense
So why is Merkel surprised that Muslims don't want to integrate and would prefer to live separately? Except for getting free housing, benefits, etc.
They can't integrate in their homeland did she really think they would change?