[Marinario]

Their father Assad Shukeiri took two wives. One was from Turkey, the other one was an Arab.

The moderate Dr. Anwar was a son of the Turkish wife. The radical jihadi Ahmed was a son of the Arab.
Source (in heb.)

BTW.
Ahmed would later be known, the first PLO chairman. In 1964 he was appointed by Nasser, after (his rival) Saudi Arabia's king Faisal fired Shukeiri from representing in the UN, (mid-Dec.62) for supporing/saluting in UN (Nov.30.62) Nazi gang in Argentina.

[Humane1]

Great information. The Maariv article by. A. Disenchick in 1949, is on October 21, 1949.