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 Italy Silvio Berlusconi, owner of three private TV channels, founded Forza Italia (Forward Italy) party and won the elections, becoming one of Italy's most important political and economic figures for the next decade. Berlusconi is also the longest serving Prime Minister in the history of the Italian Republic and third-longest serving in the whole history after Mussolini and Giolitti. Ousted after a few months of government, Berlusconi returned to power in 2001, lost the 2006 general election five years later to Romano Prodi and his Union coalition, but he won the 2008 general election and was elected Prime Minister again for