Question: What founder of the United Nations did Barry Goldwater credit for attributing to his United States Senate campaign victory due to his unpopularity?

<P0-S0> Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd President of the United States (1945–53), assuming that office upon the death of Franklin D. Roosevelt during the waning months of World War II. <P0-S1>  He is also the only world leader to have ever used nuclear weapons in war, desegregated the U.S. Armed Forces, supported a newly independent Israel, and was a founder of the United Nations. <P0-S2>  He is known for launching the Marshall Plan to rebuild the economy of Western Europe, for leading the Cold War against Soviet and Chinese communism by establishing the Truman Doctrine and NATO, and for intervening in the Korean War. <P0-S3>  In domestic affairs, he was a moderate Democrat whose liberal proposals were a continuation of Franklin Roosevelt's New Deal, but the conservative-dominated Congress blocked most of them. <P0-S4>  He used the veto power 180 times, more than any president since then, and saw 12 overridden by Congress; only Grover Cleveland and Franklin D. Roosevelt used the veto so often, and only Gerald Ford and Andrew Johnson saw so many veto overrides. <SEP> <P1-S0> The Barry Goldwater presidential campaign of 1964 began when United States Senator Barry Goldwater of Arizona elected to seek the Republican Party nomination for President of the United States to challenge incumbent Democratic President Lyndon B. Johnson. <P1-S1>  Early on, before officially announcing his candidacy for the presidency, Goldwater was accused by Governor of New York Nelson Rockefeller of attempting to galvanize Southern and Western Republican support while neglecting the industrial northern states, eventually becoming one of Goldwater's primary opponents in the race for the Republican Party's nomination in 1964. <SEP> <P2-S0> The 1958 United States Senate elections in Arizona took place on November 4, 1958. <P2-S1>  Goldwater had attributed the win to the unpopularity of President Harry S. Truman and popular Wisconsin Senator Joseph McCarthy endorsing his campaign. <P2-S2>  Incumbent Republican U.S. Senator Barry Goldwater ran for reelection to a second term, and defeated former U.S. Senator, and then-Governor, Ernest McFarland in the general election. <P2-S3>  The election was a virtual rematch from 1952, where Goldwater defeated McFarland by a narrow margin. <SEP> <P3-S0> Millhouse: A White Comedy is a 1971 documentary by Emile de Antonio following Richard Nixon's political career from his election to the House of Representatives in 1946 to his election as President of the United States in 1968. <P3-S1>  It begins with Nixon's "last press conference" in 1962 after his loss in the race for Governor of California in which he famously said, "You won't have Dick Nixon to kick around anymore." <P3-S2>  Then a collage of videos show Nixon's trajectory from his House campaign to his involvement in the Alger Hiss case, election the Senate in 1950, election as Vice President in 1952 including the full Checkers speech, campaign for the presidency in 1960, campaign for Barry Goldwater's presidential candidacy in 1964, and his triumphant election as President in 1968 as the "New Nixon". <P3-S3>  The film featured interviews but no voice-over.