Osama bin Laden is dead, but Al Qaeda remains the CIA's "number one threat." The organization has evolved into a much more complex and far-flung entity. Moving well beyond the headlines, this new account of Al Qaeda offers readers a completely new understanding of the organization's aims, strategies, and fortunes in a new era of conflict.

The Arab Spring and Al Qaeda -- Al Qaeda in the Arabian Peninsula -- Somalia's al-Shabaab -- The Taliban-Al Qaeda nexus: Afghanistan -- The Taliban-Al Qaeda nexus: Pakistan -- Al Qaeda in the Islamic Maghreb: Algeria, Morocco, Tunisia and the Sahel -- Al Qaeda in the Islamic Maghreb: Libya -- Ongoing and new alliances -- The digital battleground.