Considered by some to be the first major international event of the Cold War, the defection of Soviet cipher clerk Igor Gouzenko radically transformed the way the West regarded and approached Soviet espionage. The authorities at first dismissed Gouzenko’s reports of Stalin’s efforts to steal nuclear secrets and of Soviet spy rings operating in Canada and the US, but he soon convinced them of the truth behind his allegations. The information he revealed helped lead to the apprehension of whom? Discuss
Source: The Free Dictionary