Yes, Robin Williams learned some Russian for his role in "Moscow on the Hudson." To portray Vladimir Ivanoff, a Russian circus musician who defects to the United States, Williams undertook language training to authentically represent his character. His efforts contributed to the film's portrayal of cultural and linguistic challenges faced by immigrants, adding depth to the story. While he wasn't fluent, his commitment to learning Russian reflected his dedication to the role.

"Moscow on the Hudson" is not based on a true story, but it reflects real experiences and sentiments related to the Soviet Union and immigration. Released in 1984 and directed by Paul Mazursky, the film follows a Soviet circus musician, played by Robin Williams, who defects while on tour in New York City. While the characters and events are fictional, the film captures the emotional and cultural challenges faced by many Soviet immigrants during the Cold War era, highlighting themes of freedom and identity.

"A Gentleman in Moscow" is not a movie but a novel written by Amor Towles. It tells the fictional story of Count Alexander Rostov, who is sentenced to house arrest in a grand hotel in Moscow after the Russian Revolution. While it features real historical events, the characters and their experiences are fictional. The book was adapted into a miniseries, which further explores Rostov's life and interactions over several decades. Therefore, it is not a true story but rather a work of historical fiction.

"Moscow on the Hudson" is generally considered a good movie, praised for its blend of comedy and drama. Released in 1984 and directed by Paul Mazursky, it stars Robin Williams as a Russian defector navigating life in America. The film explores themes of identity, freedom, and cultural differences, offering both humor and poignant moments. Critics and audiences appreciate Williams' performance and the film's commentary on the immigrant experience, making it a thoughtful and entertaining watch.