Arab nationalist planned hijackings - Los Angeles Times - By Kim Murphy, Jan. 27, 2008
...He studied medicine at the American University of Beirut,
founding a series of radical student organizations that called for unifying the Arabs military might to annihilate Israel. After Israeli forces crushed an Arab assault and moved into the West Bank, Gaza Strip, East Jerusalem and Syrias Golan Heights in the 1967 Middle East War, Habash formed the PFLP to continue operations against Israelis. It became the second-largest faction within the PLO, after Arafats Fatah organization.
In one of its first operations, an Israeli El Al airliner was hijacked to Algiers in July 1968, forcing the Israelis to free 16 Palestinian prisoners in exchange for the release of the plane and its passengers.
https://www.latimes.com/archives/la-xpm-2008-jan-27-me-habash27-story.html
In 1975, an Arab author M. Hussain has still quoted Habash re targeting Jews (internationally) as in the original quote.
The Palestine Liberation Organisation: A Study in Ideology, Strategy and Tactics Mehmood Hussain, University Pub., 1975, p. 46
https://books.google.com/books?id=MbZtAAAAMAAJ&dq=&focus=searchwithinvolume&q=Quantity But by 1991, another one, J.R. Nassar has conveniently replaced the word 'Jew' with 'zionist': The Palestine Liberation Organization: From Armed Struggle to the Declaration of Independence, Jamal Raji Nassar, Praeger, 1991, p.89
Prior to 1972 , George Habash , leader of the PFLP, defended these acts...
https://books.google.com/books?id=U9KPAAAAMAAJ&focus=searchwithinvolume&q=%22battleground%22
By 2008 after Habash's death as it became public, again, Arab blogger tried to deny the quote altogether.