Sequence of photographic match-ups, displaying the dramatic change, Berlin has gone through, since the fall of the Berlin Wall. (Footage by Sean Gallup/Getty Images)

Ambassador Henry Cabot Lodge Jr explains US interpretation of what happened in regard to the U2 spy plane to UN Security Council / 'a Soviet fighter pressed in from the seaward side and tried to force the plane off its course and into...

In Security Council debate in New York, Ambassador Henry Cabot Lodge Jr gives the lie to Soviet charges that the R-B-47 reconnaissance jet shot down by Red fighters was on a spy flight / He reveals the plane's flight was tracked by US...

CLEAN: Exterior shots of metal poles marking the line of the old Berlin Wall and helium balloons ready to be released to mark the 25th anniversary of its demise on November 09, 2014 in Berlin, Germany.

/ aerials of Berlin streets and buildings / left over bombing damage is can be seen on some buildings / aerial of Reichstag. Berlin Wall: aerials over the city on August 31, 1962 in Berlin, Germany (Footage by Getty Images)

/ drawing of a Sputnik space rocket in space / sketch of rocket on landing pad with three men standing at the base / animation of rocket blasting off into space / rocket splits in two / satellite comes off front of rocket / satellite...

American planes marked with a circled W on tails / small bombs drop out of planes exploding on ground impact / aerial view of bombing devastation, fires and smoke / soldiers running past burning buildings / hilltop view of thick smoke in...

Mikhail Gorbachev walks down staircase to meet East German leader Erich Honecker and pose for photocall during 40th Anniversary ceremony / Gorbachev, Honecker and others along into conference room / General views of conference centre and...

/ Vice President Richard Nixon and Soviet chief Nikita Khrushchev debate standing next to a microphone and using interpreters / conversation is light and mocking. VP Richard Nixon debates Nikita Khrushchev on July 27, 1959 in Moscow,...

/ Vice President Richard Nixon and Soviet chief Nikita Khrushchev escort each other into the United States Fair in Moscow / enter into a dome shaped building / Nixon cuts the opening ribbon as Khrushchev applauds / everyone shaking...

Invasion begins with bombing of Cuban airfields / flaming vehicles and destroyed planes / Cuban troops mobilizing

The concrete blocks and barbed wire of the Berlin Wall divide the city between East Germany and West Germany.

Crowd of soldiers standing in front of Brandenburg Gate / barbed wire attached to posts as the Berlin Wall is built / two men guiding large cement slab being lowered by crane / PAN from soldier leaning against wall to soldiers walking by...

Robert Kennedy in motorcade with Willy Brandt / looks at Berlin Wall / huge crowd at rally / Robert Kennedy at podium to give speech. Robert Kennedy visits West Berlin on February 24, 1962 in West Berlin, Germany (Footage by Getty Images)

WA Dull city street, pan left to MCU Berlin wall with colourful graffiti 'Berlin', Berlin

/ Cuban army pilots stand in front of plane / CU of weaponry / CU of plane nose / refugee Cuban pilot speaks with officials in Florida / acting Foreign Minister Carlos Olivares shows spent missiles to diplomats / CU missiles. Cuban Army...

Title: "Washington Leads Nation in "Operation Alert 1955" superimposed over aerial of Pentagon / LS Pentagon across pond / aerial Pan parking lot and Pentagon / CU clock hanging from ceiling at 12:00 time / Pan men in office working at...

Title card: "Top-Level Diplomacy Visitors to Our Shores" / "In Washington" superimposed over White House exterior / CU Indian Ambassador to the United Nations and Chief Indian Foreign Affairs Representative V. K. Krishna Menon and Indian...

Title superimposed on a young Russian defector, "He chooses Freedom...Son of Soviet Flier Flees to West" / Seated teenaged defector Valery Lysikov with men in suit; he chats with an older man / Lysikov looks at vehicles while chewing gum...

Title Card: "Bulletin - Joseph Stalin Is Dead" // Moscow: LS Kremlin Wall in snow / MS building / VS people walking in street, reading newspapers, woman with baby / CU Joseph Stalin in military uniform, smiling slightly / MS Vyacheslav...

A hydrogen bomb explodes in the ocean.