German Interior Minister Thomas de Maiziere, German Foreign Minister Frank-Walter Steinmeier, President of the German upper house Bundesrat Malu Dreyer, President of the Berlin House of Representatives Rald Wieldand, Bundestag President Norbert Lammert, German Chancellor Angela Merkel, German President Joachim Gauck, his partner Daniela Schadt, Berlin Mayor Michael Mueller, and German Finance Minister Wolfgang Schaeuble attend a memorial service in the Kaiser Wilhelm Gedaechtnis Church in Berlin, Germany, December 20, 2016. [Photo/IC]