If you think deep about religions any of the books offer peace though. They all want you to turn people from other religions to their own religion. Christianity do the same, only Jews do different, you can't become jew but they still run the world. ISIS is the live proof of 6th century Islam in 21st century. How they do it is the same as in history. You can't blame for them, they just apply what's written in the book.
Minor note (and I'm not advocating religion or conversion) yes you can become a Jew (and then Help Run the World) or find out that actually they don't run the world but only a few hot dog stands.
well Jews run the world, by proxy that is, they have strong lobbies in every major country, they influence the financial and political world and they influence the international politics especially toward Israel, but I guess good for them, it proves how smart they are.
ISIS is not even representing the 6th century Islam, they have their own version of it, Islam stats clearly to not kill women and children even if times of wars, to not kill prisoners, to not steal or destroy what's god created ..... they are doing every capital sin possible in Islam, yet they claim to represent it...
Islam, according to the holy writings, is peace for Muslims; peace for people that Muslims are trying to convert to Islam; violence for people who obstinately will not convert to Islam; violence for people who attack Muslims; violence for Muslims who convert to some other religion.
Most Muslims don't have enough of the required violence that is directed in the holy books. ISIS may have too much violence, and may not be giving non-Muslim people a long enough time to convert to Islam.
When you get right down to what the Islamic holy books say, it is difficult to figure out if ISIS is successful or not. However, the more peaceful the Muslim is towards non-Muslims, the less successful of a Muslim he is as well.
Wrong, even from a past perspective, check out Islam golden era (9-16 century) for example.