Dr. Robert Soblen (born Ruvelis Sobolevicius, also known as Roman Well; November 7, 1900 – September 11, 1962), was a prominent member of the pro-Trotsky Left Opposition in Germany in the 1930s. He moved to the United States in 1941 with his brother Jack Soble, and was arrested in 1960 as a Soviet spy. Convicted and sentenced to life in prison, he fled the U.S. while on bail and sought asylum first in Israel, then Britain. He committed suicide by overdosing on barbiturates when his last appeal for asylum in Britain was denied.
Pre-trial career in Europe and the United States 
Born in Vilkaviskis, Lithuania, both Soblen and his younger brother Jack (born Abromas Sobolevicius, also known as Abraham or Adolph Senin), were important figures in Trotskyist circles in the 1920s and 1930s. They were very active in French and German Trotskyist movements, handling both Trotsky's secret correspondence to the Soviet Union and publication of his Opposition Bulletin. Jack Soble later claimed he and Robert began working for the Soviet Secret Police against Trotsky in 1931. In 1932, Trotsky broke with the brothers, and Robert joined Trotsky's enemies in the Communist Party of Germany.
Soblen, Soble, and many members of their family moved to the United States in 1941. According to Jack Soble's testimony during Robert's trial, they were personally granted permission for the move by NKVD director Lavrenty Beria, on condition that they assist in Soviet espionage activities in the United States. After arriving in the United States, Soblen set up a psychiatric practice in New York. According to testimony at his trial, Soblen's activities also included spying on the Trotskyist movement in the United States, and transmitting stolen intelligence documents and military information to the Soviet Union.
Soble and Soblen Trials 
Soblen's brother Jack was arrested in 1957 and charged with espionage, primarily based on the testimony of Hollywood producer Boris Morros. Morros first worked with Soble's organization providing business cover for Soviet agents, but later agreed to act as a double agent for the FBI. Soble pled guilty to the espionage charges, made a detailed statement of his activities, and was sentenced to seven years in prison.
Robert Soblen was not indicted until 1960. He was charged with providing the Soviet Union with secret OSS documents in World War II and photographs of a U.S. nuclear testing site in 1950. Soblen pled not guilty. His trial, at which Jack was a primary witness, ended with his conviction, and on 7 August 1961 Soblen was sentenced to life imprisonment. Soblen, suffering from leukemia, was released on bail pending an appeal. His conviction was upheld by the U.S. Court of Appeals in March 1962, and an appeal to the Supreme Court was rejected in June 1962.
Asylum attempts 
Following the rejection of his last appeal, Soblen jumped bail and flew to Israel. Once there, he claimed Israeli citizenship as a Jew under Israel's "Law of Return", and as an Israeli citizen asserted immunity to extradition. His claims were rejected and Soblen was deported from Israel to the United States on July 1. During a stopover in London, Soblen slashed his wrist and abdomen with a dinner knife. He was removed from the airplane and hospitalized, after which he filed an appeal for asylum in England. His appeal was ultimately denied. On the day of his deportation, he took an overdose of barbiturates, and died on September 11, 1962.
The Soble/Soblen trials revealed a great deal about Soviet espionage directed against Trotsky and his followers. They also revealed a number of aspects of Soviet espionage against the United States in the 1940s and 1950s, and were one of the more successful espionage prosecutions in the early Cold War period. The extent to which the VENONA decryption project assisted in the case is not clear. The project was never mentioned during either of the brothers' trials, but according to Klehr and Haynes, a number of cables deciphered by the VENONA project mention Soblen under the covername ROMAN, the pseudonym he used in Germany. Soblen's expulsion from Israel was controversial enough to provoke a no-confidence vote against David Ben-Gurion's government. The vote failed, but the controversy may have contributed to the passing of Israel's "Offenses Committed Abroad Act" in 1978, which sharply restricted the circumstances under which Israeli citizens could be extradited. Soblen's asylum request in England also generated controversy and calls for reform.
- Deutscher, 20
- Deutscher (ibid.) doubts that the Sobolevicius brothers were Soviet agents this early. On the other hand, Hans Schafranek suggests that "Roman Well" (Ruvelis) may have begun working for the Soviet government against Trotsky as early as 1927.
- Haynes and Klehr, Early Cold War 209.
- Anderson, NY Times.
- Haynes and Klehr, Early Cold War 225.
- Haynes and Klehr, Early Cold War 222
- Haynes and Klehr, Early Cold War 226-7
- Haynes and Klehr, Early Cold War 227.
- Haynes and Klehr, Venona 252
- Abramovsky and Edelstein, 305
- See Thornberry (1963) for a summary.
- Abramovsky, Abraham and Jonathan I. Edelstein. "The Sheinbein Case and the Israeli-American Extradition Experience: A Need for Compromise," Vanderbilt Journal of Transnational Law 32 (1999): 305
- Anderson, David. "Soblen Branded Spy by Brother" New York Times, June 22, 1961, p. 11.
- Deutscher, Isaac. The Prophet Outcast: Trotsky, 1929-1940, Oxford University Press (1963)
- Haynes, John Earl, and Harvey Klehr. Venona: Decoding Soviet Espionage in America, Yale University Press (1999)
- Haynes, John Earl, and Harvey Klehr. Early Cold War Spies: The Espionage Trials that Shaped American Politics, Cambridge University Press (2006)
- Schafranek, Hans. "Kurt Landau," Cahiers Leon Trotsky, Paris #5, First Trimester 1980, 74.
- Thornberry, Cedric H. R. "The Soblen Case," Political Quarterly 34, no. 2 (April 1963): 162-173.