Could the downing of Flight 17 have been prevented if the plane had been equipped with missile defense technology?
CNN's Sara Sidner is OutFront.
Erin Burnett OutFront airs weeknights at 7 p.m. ET. Designed to showcase Erin's unique style--casual, smart, and confident--OutFront stays ahead of the headlines, delivering a show that's in-depth and informative.