German President Frank-Walter Steinmeier expressed his condolences to Turkish President Recep Tayyip Erdoğan following Sunday’s deadly bombing in Istanbul. “I was shocked by the news of the devastating explosion in the middle of bustling Istanbul,” Steinmeier wrote Sunday, according to a statement from his office. “My thoughts are with the victims and their families, and my wishes for recovery go out to all those injured.” “In this moment of shock, we Germans stand by the citizens of Istanbul and the Turkish people.” At least six people were killed and dozens more injured in an attack in the c…