Former Polish President Lech Walesa stands next to a domino block on the corner of the Reichstag Gate in Berlin November 9, 2009, during celebrations to mark the 20th anniversary of the fall of the Berlin Wall. Reuters Pictures logo Reuters Pictures 27 months ago

Former Polish President Lech Walesa stands next to a domino block on the corner of the Reichstag Gate in Berlin November 9, 2009, during celebrations to mark the 20th anniversary of the fall of the Berlin Wall.