A bin Laden Family Album

Sa'ad, Osman and Mohammed bin Laden
The third child of Osama and Najwa, Sa'ad was rumored to be jailed in Iran, although no one, including his mother, knows his whereabouts. Osman married the daughter of a high-ranking member of al-Gama'a al-Islamiyya, a terrorist group dedicated to the overthrow of the Egyptian state. Mohammed is said to have the necessary traits — and parental approval — to be Osama's successor.

• Growing Up bin Laden: Osama's Son Speaks