Changes

With the help of [[Elizabeth Zarubina]], the wife of North American [[Rezident]] [[Vasili Zarubin]], Kheifetz and Zarubina persuaded Oppenheimer to share information with "antifascists of German origin," which provided a rationale for taking [[Klaus Fuchs]] to [[Los Alamos]]. Oppenheimer agreed to hire, and promote these people, provided he received confirmation of their opposition to Nazism before they came to the project. Under Oppenheimer's initiative, Fuchs was given access to material that he had no right to look at.<ref>''Special Tasks'', pp. 190, 193.</ref>

With the help of [[Elizabeth Zarubina]], the wife of North American [[Rezident]] [[Vasili Zarubin]], Kheifetz and Zarubina persuaded Oppenheimer to share information with "antifascists of German origin," which provided a rationale for taking [[Klaus Fuchs]] to [[Los Alamos]]. Oppenheimer agreed to hire, and promote these people, provided he received confirmation of their opposition to Nazism before they came to the project. Under Oppenheimer's initiative, Fuchs was given access to material that he had no right to look at.<ref>''Special Tasks'', pp. 190, 193.</ref>

On the request of Kheifetz and confirmed by [[Earl Browder]], Oppenheimer provided cooperation in access to research for several of KGB tested sources including a relative of Browder.<ref>''Special Tasks'', pg. 3.</ref><ref>Allen Weinstein and Alexander Vassiliev, ''The Haunted Wood: Soviet Espionage in America—the Stalin Era'', Random House, 1999. ISBN 0788164228</ref>

On the request of Kheifetz and confirmed by [[Earl Browder]], Oppenheimer provided cooperation in access to research for several of KGB tested sources including a relative of Browder.<ref>''Special Tasks'', pg. 3.</ref><ref>Allen Weinstein and [[Alexander Vassiliev]], ''The Haunted Wood: Soviet Espionage in America—the Stalin Era'', Random House, 1999. ISBN 0788164228</ref>

By 1943 it was decided in Moscow that all contacts with Oppenheimer would be through unregistered illegal agents only. [[Lev Vasilevsky]], the [[Rezident]] in Mexico City was put in charge of running the illegal network after September 1943.  Kheifetz and [[Semyon Semenov]] were instructed to turn over all their contacts around Oppenheimer in California.  So secretive was the operation that under Beria's direct orders Kheifetz and Semyenov were instructed not to tell anyone in the Soviet Foreign Intelligence service about the transfer of contacts to the Mexico City ''[[Rezidentura]]''.<ref>''Special Tasks'', pgs. 187.</ref>

By 1943 it was decided in Moscow that all contacts with Oppenheimer would be through unregistered illegal agents only. [[Lev Vasilevsky]], the [[Rezident]] in Mexico City was put in charge of running the illegal network after September 1943.  Kheifetz and [[Semyon Semenov]] were instructed to turn over all their contacts around Oppenheimer in California.  So secretive was the operation that under Beria's direct orders Kheifetz and Semyenov were instructed not to tell anyone in the Soviet Foreign Intelligence service about the transfer of contacts to the Mexico City ''[[Rezidentura]]''.<ref>''Special Tasks'', pgs. 187.</ref>