Asks him not to allow Christianity to "perish".
Only 27 out of 145 suspects were born in Germany.
Hungarian leader warns Islamic influx is damaging Europe's cultural heritage.
Cannot be deported due to political situation.
Promises of refuge will trigger a "pull effect."
Scandinavian country continues to enjoy benefits of diversity.
Numbers of migrants heading west could "eclipse" previous numbers.
Merkel and Macron scramble to prevent repeat of 2015.