A German court is set to deliver its verdict on Monday in the murder trial of a former Stasi officer accused of a fatal shooting at a border crossing in Berlin 50 years ago. The prosecution is demanding a 12-year prison sentence for the killing at Berlin’s Friedrichstrasse crossing on March 29, 1974. The accused is an 80-year-old man from the eastern city of Leipzig who was a first lieutenant in the East German secret police, commonly known as the Stasi, at the time of the shooting. He is accused of gunning down the 38-year-old Pole Czesław Kukuczka in the back from a distance of 2 to 3 metres…