CIVIC LANE Germany's government has highlighted the Leipzig drone incident as evidence of a new kind of infrastructure threat. Fresh reporting has added details about potentially explosive-equipped drones while authorities continue examining what happened and who was responsible. Airports and other critical sites are difficult to protect because small drones are cheap, mobile and hard to detect. Governments could respond with surveillance, electronic countermeasures, physical defences or tougher regulation, but every option has costs and limitations. The strongest public-interest question is therefore how Germany should prioritise its response.