Photo Gallery: Al-Qaida's New Leadership Ranks 10/25/2010
 Saif al-Adel: The Egyptian is one of the most dangerous terrorists in the...
AFP/ FBI

Saif al-Adel: The Egyptian is one of the most dangerous terrorists in the world. After several years under apparent house arrest in Iran, he has returned to the border area between Pakistan and Afghanistan -- where he appears to be playing an important role at the headquarters of the al-Qaida terrorist network.