For 50 years, Berlin was the symbol of the Cold War. The city at the heart of the intelligence war between the US and the Soviet bloc. Thousands of KGB or CIA, agents observed each other, cogs in the biggest information war in history.
Overview：For 50 years, Berlin was the symbol of the Cold War. The city at the heart of the intelligence war between the US and the Soviet bloc. Thousands of KGB or CIA, agents observed each other, cogs in the biggest information war in history.
