The CIA Book ClubThe astonishing story of the ten million books that were smuggled across the Iron Curtain during the Cold War. For almost five decades after the Second World War, Europe was divided by the longest and most heavily guarded border on earth. The Iron Curtain, a near impenetrable barrier of wire and wall, tank traps, minefields, watchtowers and men with dogs, stretched for 4,300 miles from the Arctic to the Black Sea. No physical combat would take place