14. The way that these men were able to stay hidden in the shadows and undiscovered until 1964. John Cairncross, the fifth man, was not even discovered until 1990. I find it very interesting and intruiging that these men were able to fool the prestigious and world renowned British MI5 and MI6. Michael Straight was also able to fool the United States CIA. Their secret selling ranged from troop positions to full scale engineering plans for nuclear weapons. This is how the Soviets were able to find out about the Manhattan Project during WWII. It is astounding that these men could pull off one of the biggest espionage operations of all time and remain undiscovered for decades after the fact.