A meeting of German politicians on the hotly contested topics of migration and security ended on Tuesday evening with participants staying tight-lipped about the details. But members of Chancellor Olaf Scholz’s centre-left government and the conservative opposition both described the discussion as broadly positive. Further talks are expected in the coming days. The cross-party meeting in Berlin was called following a deadly mass stabbing by a 26-year-old Syrian man at a festival on a central square in the western German city of Solingen last month. “These were focussed, open and constructive d…