declar execut committe june extradit sch decl rev free movement person provid schengen agreement convent implement schengen agreement accompani compensatori measur aim guarante secur territori schengen state judici cooper crimin matter import aspect measur convent implement schengen agreement provis aim simplifi judici cooper crimin matter extradit regard experi gain field extradit terrorist offenc convent brought forc take account import contract parti attach effect combat terror common territori take account declar fight terror adopt execut committe hagu februari welcom agreement reach june member state european union convent improv extradit repres posit step forward cooper member state contract parti declar examin request extradit request state account safeguard schengen area free movement secur request state step ensur decis suspend detent pend extradit measur adopt person sought opportun escap extradit decis law request state provid suffici legal basi measur question request state undertak initi accord constitut requir legal measur achiev aforement object request state inform request state delai detent person sought pend extradit suspend pend agreement legal basi provid point parti concern measur bilater prevent act jeopardis law order schengen member state