The European Central Bank is "undeterred" by a German Constitutional Court ruling critical of its government bond-buying programme and will do "whatever is necessary" to support the eurozone economy through the coronavirus crisis, president Christine Lagarde said Thursday. "We are an independent institution accountable to the European Parliament, driven by our mandate" to maintain price stability, Lagarde told a Bloomberg News panel discussion. "We will continue doing whatever is needed, whatever is necessary... undeterred," Lagarde added. tgb/dlc/jh