German president approached by heads of Over the Rainbow Zionist movement at ceremony in Bremen, asked to help bring home Avera Mengistu and Hisham al-Sayed and return remains of IDF soldiers Hadar Goldin and Oron Shaul. Steinmeier met on Wednesday with the head of Over the Rainbow Zionist movement, Tzvi Avisar, and the movement's head in Germany, Rabbi Natanel Teitelbaum, at the inauguration of a new memorial site at the Bunker Valentin in Bremen, in memory of 1,400 victims,