sau kau we, the u.s. killed. became a magnet for the bloodthirsty. baghdadi silently behind an isis brutality to extreme even al qaeda disowned it, leading to the extremist groups to split in february 2014. and months later, the group to show its fighters breaking the borders of syria and iraq, declaring their caliphate. with baghdadi at its helm, claiming direct lineage from the prophet mohammad, the new caliph, the pinnacle of years in calculation, isis rose fast. then came an attack on an occupation of mosul. the atrocity against the yazidis in mt. sinjar.