It is true that extremism has reached an unprecedented level of oddness. Do not assume that the menacing Islamic State of Iraq and Syria (ISIS) is only threatening the United States and Arab governments, it is now also terrorizing other extremist groups. This month, ISIS declared war against the Surooris.
The Surooris are a radical group founded by Mohammed Suroor Zain al-Abedin, a Syrian mathematics teacher who worked at a Saudi school. He advocated an ideology refuting traditional Salafism and encouraging religious rebellion. It is believed that he was behind the thorough changes made to the conventional Salafist concept. This group became notorious for its use of takfirism (declaring rivals as infidels) against governments and intellectuals or anyone who disagreed with its religious and political views. The group, which used to terrorize people on websites and elsewhere, is now terrified. It is afraid of ISIS, which considers the Surooris infidels and issued a religious sanction to kill them.
ISIS is the product of the Suroori teachings, which is the product of extremist ideologies that preceded them