ສະຫຼອງຄົບຮອບ 25 ປີ ທີ່ ກຳແພງເບີລິນ ຖືກມ້າງລົງ

Balloons of the art installation "Lichtgrenze 2014" fly away in front of Brandenburg Gate during the central event commemorating the fall of the Wall in Berlin, Germany, Nov. 9, 2014.

U.S. President Barack Obama (C) attends a wreath-laying ceremony at the Jose Marti monument in the Revolution Plaza in Havana next to the Vice-President of the Cuban Council Salvador Valdes Mesa (C-R).

Former Soviet President Mikhail Gorbachev, center, releases a balloon from the installation "Lichtgrenze" (Border of Light) in front of the Brandenburg Gate in Berlin, Nov. 9, 2014.

A man wipes his eyes as he attends the central event to commemorate the Fall of the Wall at the Brandenburg Gate in Berlin, Germany, Nov. 9, 2014.

German Chancellor Angela Merkel shakes hands with children symbolizing the so-called "wall peckers," people who chipped the wall with hammers, at Berlin Wall anniversary ceremonies in Bernauer Strasse in Berlin, Nov. 9, 2014.

A mother and young daughter place roses at the Berlin Wall memorial in Bernauer Strasse, during a ceremony marking the 25th anniversary of the fall of the Berlin Wall in Berlin, Nov. 9, 2014.

German Chancellor Angela Merkel walks along a section of the former Berlin Wall at the memorial in Bernauer Strasse, during a ceremony marking the 25th anniversary of the fall of the Berlin Wall, in Berlin, Nov. 9, 2014.

German Chancellor Angela Merkel shakes hands with people prior to a ceremony at the Berlin Wall memorial site at Bernauer Strasse in Berlin, Germany.

German Chancellor Angela Merkel (6th R) and dignitaries take part in a ceremony marking the 25th anniversary of the fall of the Berlin Wall at a memorial in Bernauer Strasse in Berlin, Nov. 9, 2014.

People gather along a light installation called Light Border ( Lichtgrenze ) featuring the Berlin Wall during commemorations to mark the 25th anniversary of the fall of the Berlin Wall at the Berlin Wall Memorial in the Bernauer Strasse Berlin, Germany.

German Chancellor Angela Merkel speaks in front of a photograph showing Bernauer Strasse in November 1989 at the exhibition opening during a ceremony marking the 25th anniversary of the fall of the Berlin Wall at a memorial in Bernauer Strasse Berlin, Germany.

German Chancellor Angela Merkel, right, and Mayor of Germany's capital Berlin, Klaus Wowereit walk along remains of the Berlin Wall at the Berlin Wall memorial site at Bernauer Strasse in Berlin, Germany.

People walk under the lit balloons installation along the river Spree in Berlin, Nov. 8, 2014.