captioning sponsored by newshour productions, llc >> woodruff: good evening. i'm judy woodruff. gwen ifill is away. on the newshour tonight, a chilling attack at istanbul's busy airport. at least 41 are dead and hundreds wounded, the latest in a wave of violence to hit a country active in the anti-isis coalition. also ahead this wednesday, i sit down with c.i.a. director john brennan to talk repercussions of the istanbul bombing, the spread of isis, and more. plus, hope behind bars. how convicted juveniles in massachusetts are planning for a brighter future, by earning their degree while serving time. >> i have two younger brothers, so they look up to me. i have people that see a lot in me, and i don't want to really let them down, or myself down, for that matter. >> woodruff: all that and more, on tonight's pbs newshour.