حركة القوميين العرب
In June 1967, Israel controlled Gaza after the Six-Day War. During and shortly after the war, Dr. Abdel-Shafi volunteered at al-Shifa Hospital in Gaza. He was later temporarily detained by Israel, suspected of support for the military activities of George Habash's new guerilla faction, the Popular Front for the Liberation of Palestine (PFLP), an offshoot of the Arab Nationalist Movement. Abdel-Shafi denied membership, but expressed his sympathy for the group's goals.