the goal is simple - create chaos, increase tension between europeans and immigrants, create a spirale of violence producing more violence, till every side has good reasons to not step back. this is goal of jihad in europe, footsoldiers will be people already living here, that initially were living peaceful life, but eventually some violence will drag them in. at the end, civil war.
France for example could actually avoid that, if it retreated from all its military interventions, but that's not going to happen, and again, jihadists realize that too. I must agree with parent poster, nice approach ain't going to solve this, and victor at the end will be probably the more ruthless one. But fear not, as they say we're 7 days to the wolves, and we europeans can still kick a butt or two if pressed hard.
I hope I am wrong, that's for sure :)