Israeli Prime Minister Benjamin Netanyahu's father, often believed to have had a great influence on his son's right-wing politics, died on Monday at the age of 102, an official statement said.
Benzion Netanyahu was a renowned professor of medieval Jewish history, an expert on anti-Semitism and a supporter of the late hawkish Zionist ideologue Zeev Jabotinsky.
"Bibi learnt the pure Zionism from a man who was so close to Jabotinsky," parliament speaker Reuven Rivlin told Israel Radio, referring to the prime minister by his nickname.
"He was educated in a home where Zionism was a Zionism with no compromise ... though Bibi's realpolitik was much more developed."
At a party to celebrate his father's 100th birthday, the Jewish Chronicle quoted the prime minister as saying: "I learnt from you to look into the future."