Prior to emigrating from the Soviet Union to the United States in 1991, Khrushchev worked in various high-level engineering positions. From 1968 to 1991, he served at the Control Computer Institute in Moscow, where he rose from section head to first deputy director in charge of research. From the years 1958 to 1968, Dr. Khrushchev worked as an engineer, then later as a deputy section head in charge of guidance systems for missile and space design. In this capacity, he worked on cruise missiles for submarine craft, military and research spacecraft, Moonvehicles, and the Protonspace booster.
On 12 July 1999, Khrushchev and his wife, Valentina, became citizens of the United States through naturalization.[5] Pronouncing ''This is a great country and it's an honor to live here.' at the citizenship ceremony. He retained his Russian citizenship, becoming a dual citizen.[6] Khrushchev waited more than the required five years of living in the U.S, fearful his U.S Citizenship would restrict visits to see his extended family. His three sons and three grandchildren still live in Moscow.
His son from a previous marriage, Nikita Sergeyevich Khrushchev, a Russian journalist, died on 22 February 2007, aged 47, from a stroke.[7]
Death
Khrushchev died on 18 June 2020, at his home in Cranston, Rhode Island, at age 84, by suicide. The cause of death, as certified by the Rhode Island medical examiner's office, was a gunshot wound to the head. Cranston, Rhode Island police Major Todd Patalano said there were no signs of foul play, and the investigation by the police into his death was closed with no criminal charges filed on anyone.[8]
