An image with the slogan ‘NSA in da House’ (National Security Agency in the house) and a stylized victory sign are projected, for several minutes, on the outside of the US embassy in Berlin, Germany, 19 July 2014, during an art event by German light artist Oliver Bienkowski. Germany has called on Washington to end its spying on Europe’s biggest economy after relations between the two nations plunged to a new low in the wake of allegations of US espionage in the nation. Berlin expelled the US top intelligence officer in Germany amid claims that two German officials – one working for the domestic secret service (BND) and the other for the Defence Ministry – had handed over sensitive material to Washington.