What kind of organization is ISIS following Al Qaeda and the Taliban? Size and history?

 The History and Scale of ISIS Introduction The Islamic State in Iraq and Syria (ISIS) is one of the most notorious terrorist organizations in modern history. The group has been responsible for numerous atrocities, including mass executions, beheadings, and suicide bombings. In this article, we will explore the history and scale of ISIS, from its origins to its current state. Definition of ISIS ISIS is an Islamic extremist group that seeks to establish a caliphate, or Islamic state, in the Middle East. The group has its roots in Al-Qaeda in Iraq, but it has since broken away from the organization and established its own brand of militant jihadism. Origin of ISIS ISIS was founded in 1999 by Jordanian militant Abu Musab al-Zarqawi, who pledged allegiance to Al-Qaeda. The group initially operated in Iraq, targeting Shia Muslims and US forces. After al-Zarqawi's death in 2006, the group came under the leadership of Abu Ayyub al-Masri, who rebranded it as the Islamic State of Iraq (ISI)