they are there for decades. Serbs were only one to handle them on the ground but were stopped with attacks from air by US that gave own state to muslim terrorists.
Bosnian leader ,Alija Izetbegovic even wrote a book before 40 years called Islamic Declaration :
https://en.wikipedia.org/wiki/Islamic_Declaration that propagated these ideas
And now his son (that is currently in presidency) is resuming his work,with absolute support of US that is controlling region this way,making it unstable,just like in the middle east. Europeans are stupid as shit, that is for sure.