According to various sources, Foote was indeed a MI6 (SIS) double agent unbeknownst to Radó. After the destruction of Radó's network and his escape from Switzerland, Radó met Foote in Paris and both were ordered to return to Moscow immediately. They took off aboard a Russian military aeroplane on 6 January 1945, taking a circuitous route (the war being still in progress) via Egypt. Their plane landed to refuel in Cairo, whereupon Radó defected. Continuing alone to Moscow, Foote was subjected to intensive interrogation in an attempt to determine his loyalty and the possibility of his being a penetration agent. Foote was confronted with an instance of disinformation sent from his transmitter in May 1942 and told "That message cost us 100 000 men at Kharkov and resulted in the Germans reaching Stalingrad." Foote said that he merely passed on what he received from Radó. Satisfied with Foote's explanation, the Soviets gave Foote a false identity under the alias of Major Granatov. Posing as a German, Albert Müller, he inserted himself into postwar Berlin to establish this alias with the aim of being sent by Moscow Centre to Argentina, to attempt to identify and infiltrate groups of escaped high-ranking Nazis.