Question: What was the nickname of the Soviet defector to the United States in 1967 who was married to the Russian chemistry professor and rector Yuri Zhdanov?

Svetlana Iosifovna Alliluyeva (Russian: Светла́на Ио́сифовна Аллилу́ева , Georgian: სვეტლანა იოსებინა ალილუევა ; 28 February 1926 – 22 November 2011) (born Svetlana Iosifovna Stalina, Russian: Светла́на Ио́сифовна Сталина , Georgian: სვეტლანა იოსებინა სტალინა ), later known as Lana Peters, was the youngest child and only daughter of Soviet Premier Joseph Stalin and Nadezhda Alliluyeva, Stalin's second wife.  In 1967, she caused an international furor when she defected and became a naturalized citizen of the United States.  In 1984, she returned to the Soviet Union and had her Soviet citizenship returned.  She later went back to the United States and also spent time in France, before settling in the United Kingdom and becoming a British citizen in 1992.  She was the last surviving child of Stalin. <SEP> Valery Vorona (Russian: "Валерий Ворона" ) is a Russian violinist, soloist, conductor, and Meritorious Artist.  Vorona graduated from the Gnessin State Musical College and was a post-graduate student at the Moscow Conservatory where he later became a professor.  Later on he became a conductor and teacher in positions which added to his career.  Currently he is both artistic director and conductor-in-chief of the Moscow Chamber Orchestra for young violinists as well as a soloist of the Moscow Philharmonic Orchestra and a President of the Russian Performing Art Foundation.  He also serves as a rector at the Ippolitov-Ivanov Mupic Pedagogical Institute and by 2008 became both conductor and soloist of the Saint Petersburg International Economic Forum.  He has participated at various festivals such as the Russian Festival in San Francisco as well as "Vladimir Spivakov Festival" and Sakharov Festival in Nizhny Novgorod.  Besides national performances he has also performed overseas in such countries as France, Greece, Israel, Italy, Spain, the United States and various former Soviet republics.  He has appeared with many well-known conductors including Ukrainian Oleh Krysa and Oleksandr Bondurianskyi and the Russian conductors Valentin Berlinsky, Vladimir Ponkin, Vladimir Repin, Yuri Bashmet, and Maxim Vengerov. <SEP> The Zhdanov Doctrine (also called zhdanovism or zhdanovshchina, Russian: доктрина Жданова, ждановизм, ждановщина ) was a Soviet cultural doctrine developed by Central Committee secretary Andrei Zhdanov in 1946.  It proposed that the world was divided into two camps: the "imperialistic", headed by the United States; and "democratic", headed by the Soviet Union.  The main principle of the Zhdanov doctrine was often summarized by the phrase "The only conflict that is possible in Soviet culture is the conflict between good and best".  Zhdanovism soon became a Soviet cultural policy, meaning that Soviet artists, writers and intelligentsia in general had to conform to the party line in their creative works.  Under this policy, artists who failed to comply with the government's wishes risked persecution.  The policy remained in effect until the death of Joseph Stalin in 1953. <SEP> Yuri Andreyevich Zhdanov (Russian: Ю́рий Андре́евич Жда́нов ; 20 August 1919 – 19 December 2006) was a Russian chemistry professor and rector of the University of Rostov.  He was the son of Soviet politician Andrei Zhdanov and a former husband of Joseph Stalin's daughter, Svetlana Alliluyeva.