Forming political connections within the émigré circles after establishing himself outside Russia, Vonsiatsky was, at one point in the interwar period, a leader of the
Russian Fascist Organization, an initially independent movement that later became closely associated with the
Manchuria-based
Russian Fascist Party (RFP). In March 1942, Ivanov met with Field Marshal
Günther von Kluge, and received permission to form a Russian military unit from Soviet prisoners of war in Barysaw, Smolensk, Roslavl, and Vyazma. The RNNA's leadership told soldiers that their task was, "the fight against Bolshevism and Jewry for the creation of a new Russian state and the restoration of the pre-revolutionary system." Vonsiatsky became a subject of
FBI investigation and was indicted in 1942 for connections with proxies for German interests, including key participants in the pro-
Nazi German American Bund, whose leader,
Fritz Kuhn, had previously been assisted by Vonsiatsky's
bail money in 1939. Indicted for conspiring to assist
Nazi Germany in violation of the
Espionage Act alongside fellow conspirators Wilhelm Kunze, Otto Willumeit, Wolfgang Ebell, and Reverend Kurt E. B. Molzahn, Vonsiatsky submitted a
guilty plea after first protestations of innocence, and was convicted under the
1917 Espionage Act by a jury in
Hartford,
Connecticut on June 22, 1942. The lead prosecutor in the case was
Thomas J. Dodd, a future U.S. Senator who went on to prosecute Nazi war criminals at the
Nuremberg trials following the end of the war. Vonsiatsky was sentenced to five years in prison and fined $5000. He was imprisoned at the
United States Medical Center for Federal Prisoners in
Springfield, Missouri. Vonsiatsky was released from prison on February 26, 1946. In April 1946, a federal judge ruled in his favor in response to denaturalization proceedings which had been filed against him in 1942. After his release from prison, Vonsiatsky moved to
St. Petersburg, Florida, where he wrote articles in Russian newspapers and journals. He authored a book entitled
Rasplata (Retribution) about World War II, where "he accused the Japanese government, Franklin D. Roosevelt, and his personal nemesis,
Thomas J. Dodd, of hampering the anti-Soviet cause". Until his death, Vonsiatsky hated Roosevelt, whom he called a communist, so much that he refused to use the
dime, which featured his face. Meanwhile, Vonsiatsky dedicated the Tsar Nicholas II Museum in St Petersburg, Florida. ==Personal life==