US First Lady Michelle Obama, husband of German Chancellor Angela Merkel, Joachim Sauer and French First Lady Carla Bruni-Sarkozy leave the Cathedral in Strasbourg, eastern France on April 4, 2009. The spouses of the NATO country leaders took part in their own program during the two-day NATO summit, which marks the organization�s 60th anniversary, is taking place on April 3 and 4, 2009 in Strasbourg, France and the neighboring German cities of Baden-Baden and Kehl.AFP PHOTO DDP / NIGEL TREBLIN