As we can see in the Quran there is no unequivocal answer if jihad allows Muslims Business russian network to fight against nonbelievers and even encourage them to fight. It gives the fundamentalists the excuse to use their holy book to legitimize terrorists’ actions, but at the same time they forget that according to the Quran they are required to use the nonviolent methods to improve themselves as Muslims. The terrorists do not follow the ideas of the greater jihad, which rest on the constant improvement and elimination of all sins as well as work for the community. Terrorists don't follow the Quran as a whole, they don't admonish all the rules, and they don't understand what it means to be Muslim. They are brainwashed and that is the main reason which explains their actions. In this point the most interesting question is, who are the terrorists? Who are the people responsible for attacks like 9/11, Madrid or London 7/7 bombing? Marc Sageman in the introduction to his book “Leaderless Jihad” presents the portrait of the typical terrorist. He presents Omar Sheikh, a person in charge of many terrorist acts, who spent five years in an Indian prison. What is interesting about him is that he was born in the UK in a middle class family, he attended the best schools, and for the first part of his life he lived in a “Western style”. Also, for a long time Islam was not important to him. This picture is sort of typical. If we will look at the biggest terroristic attacks in the past few years we will see that most of the people in charge of the attacks were either born in a Western culture or they were living in Europe or the US for a significant part of their lives. From the terrorists in charge of September 11, Mohamed Atta born in Egypt, who studied in Germany where he got in touch with Al-Qaeda; Ramzi Ahmed Yousef born in Kuwait, who since 1992 lived in the US; Mahmud Abouhalima, who was born in Egypt and since 1981 lived in Germany; Ahmed Mohammad Ajaj, who was born in the West Bank and immigrated to Houston, Texas, and Khalid Sheikh Mohammed, who was born in Kuwait and studied in the US