Abu Bakr al-Baghdadi

How an introvert became the leader of the Islamic State

Britain built an empire on the slave trade. Germany perpetrated the greatest genocide in human history. Who says the Islamic State won’t be a U.S. ally someday?

Ayman al-Zawahiri's latest audio tape shows that the group that organized 9/11 is a bunch of cranky old men compared to the Islamic State.

Baghdadi's Sectarian War

The new trove of bin Laden documents reveals just how different al Qaeda and the Islamic State really are.

"It is high time for the administration to face up to Saudi Arabia’s embrace of the fundamentalist Wahhabi-Salafi creed..."

The wider network appears to have moved on somewhat from Zawahiri and the central leadership, hoping to carry the banner against ISIS while continuing the fight against its local and global enemies.

CONFRONTING THE ‘CALIPHATE’| This is part of an occasional series about the militant group Islamic State and its violent collision with the United States and others intent on halting the group’s rapid

An Iraqi officer planned Islamic State's takeover in Syria and SPIEGEL has been given exclusive access to his papers.

The Islamic State is no mere collection of psychopaths. It is a religious group with carefully considered beliefs, among them that it is a key agent of the coming apocalypse.