This article is long. But, not too long. If anyone is wondering about the situation in the ME, this article puts it into focus. I do not know if everything in the article is 100% correct. The tone appears straight forward. With no attempt to lie.
Bascily, ISIS comes from Al-Qaeda in Iraq, The Muslim Brotherhood is like a political party that funnels men and women to the more violent groups ISIS and Al-Qaeda in Lybia, from Lybia and in Syria. In Syria, the fighters go by Nusra Front, or McCain's rebels. All the Sunni Islamic fighting groups can be traced to the doctrine of Sayyid Qutb.
This individual is the foundation of thought for the Muslim Brotherhood. Leaders like Osama, Ayman al-Zawahiri and Khalid Sheikh Mohammed followed him.
More on Qutb next time and what appears to be the Taliban's problem? Taliban means students.