Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Prime Minister of Israel Since 1974, the official residence of the prime minister is Beit Aghion, at the corner of Balfour and Smolenskin streets in Rehavia. As of March 2017, there are two living former Prime Ministers. The most recent Prime Minister to die was Shimon Peres (1977; 1984–1986; 1995–1996), who died on 28 September 2016. Benjamin Netanyahu, who served as Prime Minister from 1996 to 1999, is currently serving and is thus excluded from this list. Prime Minister of Israel The Prime Minister of Israel (, "Rosh HaMemshala", "lit." Head of the Government, Hebrew acronym: ; , "Ra'īs al-Ḥukūma") is the head of