New evidence in the Rosenberg case came to light when an elderly Russian man visited the United States in March of 1997. That man was Aleksandr Semyonovich Feklisov. Feklisov claimed to be the KGB agent directly responsible for recruiting Julius Rosenberg and maintaining his network of spies.

Feklisov was a KGB officer at the Russian consulate office in New York from 1940-1946. There he worked under Senior Case Officer Anatoli Yatskov (alias Yakovlev). Part of Feklisov's duties at the consulate office included recruiting persons sympathetic to the Soviets and their effort in the war against Germany to spy for the Soviets. Julius Rosenberg was one of these recruits according to Feklisov. In the period from 1943 to 1946 Feklisov claims to have had at least 50 meetings with Julius Rosenberg.

However, Feklisov asserts that Ethel Rosenberg never met with any Russian agents and, though probably aware of her husband's activities, she did not directly participate. By the late 1940's, Feklisov had been transferred to London and was acting as a public relations officer for the KGB. His career eventually took him to Washington, D.C. where he was KGB resident from 1960 –1964, using the name Aleksandr Fomin. As KGB resident, Feklisov (Fomin) proposed what would become the basis for the resolution of the Cuban Missile Crisis, the removal of missiles from Cuba in exchange for a promise that the United States not invade the island nation.