This time I agree with you. They take only what they like from their holy books. And seeing as how war is the most profitable business, I wouldn't wonder if all sides supported them.
The peace listed in the holy Islamic writings is true and wonderful peace. But it is only for the faithful Muslims. The violence is directed at people who will not convert, or Muslims who fall away. Of course, the in-fighting among the groups of Muslims comes about because they all think that other groups are those who have fallen away.
So you think the quotes for violence in the Quran are entitled?
Or, on the other side, do you think christianity is the only true religion?
I don't know what you mean by "entitled."
All religions are truly religions. Many religions are truthful in lots of way. It all has to do with what people are looking for their religion to do for them.
True Christianity is the only religion that imparts eternal life through resurrection from death. I personally believe that there will be people of other religions who don't realize that they are Christians, and will receive eternal life along with the formal Christians. These are probably few and far between, however.