paris france efforts combat terrorism prevent attack soil generate much work investigators law court staff need keep intelligence justice officials say warn come time president emmanuel macron try curb public spend ensure security compromise balance act already prompt army commander resign budget cut workload anti-terrorism justice system rise ten-fold past five years ministry figure show sharp increase since 2014 followers islamic state group specifically call attack target french 240 people kill past three years france include 130 group is-inspired gunmen suicide bombers paris november 2015. statistics collect justice service underscore scale judicial challenge 2012 year islamist militant mohammad merah kill three jewish schoolchildren three soldier near toulouse attack regard turn point 10 case suspect terrorist activity 2016 240 new terrorism-related case open first three months 2017 130 add total workload oct. 621 case 452 either early-stage full inquiries suspect islamist-militant activity accord justice officials number counter-terrorist investigators paris prosecutor office double since 2012 still stand 14. alongside number so-called investigate magistrates judge dedicate counter-terrorism rise 11 7-8 another begin next year break point question long last like say pascal gastineau head french association investigate magistrates workload pile court france crack leave iraq syria join number estimate 1,800 2,000. past terrorism-related convictions mean around 10 years prison many finance recruit join return war syria iraq face 20 years jail convictions heavy sentence case require trial jury professional magistrates slow process compound backlog affairs date 2016 trial take place 2018-2019 say one judge argue form streamline process case rapidly french judiciary creak weight terrorism case