In Germany, preventive detention (German: Sicherungsverwahrung) is an indeterminate sentence that follows regular imprisonment, imposed as part of a criminal sentence. It is handed down to individuals who have committed a grave offence and are considered a danger to public safety. The suitability of each preventive detention has to be reviewed every two years to determine the ongoing threat posed by the individual. Preventive detention is typically served in regular prisons, though separated Sic...