Ausländische Freiwillige, die für ISIS gekämpft haben, nach Ländern (Anteil der muslimischen Bevölkerung des Landes).

I see two things in this map.

1. The Eastern European resistance to immigration makes them less vulnerable to Salafi Jihadist terrorist attacks.

2. Shia Islam is the direct rival of ISIS.

I was surprised to see that the proportion of Japanese people was higher than I expected.