Harkabi had a good command of Arabic, a deep knowledge of Arab civilization and history, and a solid understanding of Islam. He developed from an uncompromising hardliner to supporter of a Palestinianstate who recognized the PLO as a negotiations partner. In his most well-known work Israel's Fateful Hour, Harkabi described himself as a "Machiavellian dove" intent on searching "for a policy by which Israel can get the best possible settlement of the conflict in the Middle East" (1988, p. xx) - a policy that would include a Zionism "of quality and not of acreage" (p. 225).
Harkabi, Y. (1985). Al Fatah's Doctrine. In The Israel-Arab Reader: A Documentary History of the Middle East Conflict. T. W. Laqueur and B. Rubin (Eds.). New York, NY, Penguin Books. ISBN 0-87196-873-8