An image grab from a YouTube video uploaded on December 18 allegedly shows NBC employees, from left to right, Aziz Akyavas, Richard Engel, and John Kooistra in captivity in Syria. (AFP/YouTube)
An image grab from a YouTube video uploaded on December 18 allegedly shows NBC employees, from left to right, Aziz Akyavas, Richard Engel, and John Kooistra in captivity in Syria. (AFP/YouTube)

Do news blackouts help journalists held captive?