Original sentence: Furthermore, following the Moscow Theatre Siege in October 2002, where 129 of 800 hostages where killed by nerve gas employed by the authorities, he proposed that similar gas should be used by German police to fight terrorism
Edited sentence: Furthermore, following the Moscow theater hostage crisis in October 2002, where 129 of 800 hostages where killed by nerve gas employed by the authorities to incapacitate the hostage-takers, he proposed that similar gas should also be used by German police to fight terrorism