迎えにきたジープ p.184-185 The Soviet Union learned from Mitsuhashi’s report that Kaji was arrested by the US. So, the Soviet might have used Japanese public opinion to release Kaji and use it to boost anti-American sentiment.
迎えにきたジープ p.190-191 Regarding the Soviet secret agency, there were jurisdiction of the Ministry of Interior Affairs (MVD) and the Red Army. In the Red Army, about 8,000 Japanese POWs in Primorye, Vladivostok, Voroshilov, Iman, and Chita were called “Red Army Labor Battalion” and engaged in base construction.