Since 1967, Palestinians in the West Bank and the Gaza Strip have lived under military occupation, creating, according to Avram Bornstein, a carceralization of their society. In the meantime, pan-Arabism has waned as an aspect of Palestinian identity. The Israeli occupation of the Gaza Strip and West Bank triggered a second Palestinian exodus and fractured Palestinian political and militant groups, prompting them to give up residual hopes in pan-Arabism. They rallied increasingly around the Palestine Liberation Organization (PLO), which had been formed in Cairo in 1964. The group grew in popularity in the following years, especially under the nationalistic orientation of the leadership of Yasser Arafat.