Solid effort. It is neither jingoistic nor sentimental. Somehow it feels suspenseful even when you know how it's going to end. The only part that was a little hard to swallow was Angelina Jolie as Perl's wife. Don't get me wrong; Jolie's performance was superb. She's just too sexy for this role.
I can't stop wondering why Pearl was so honest about his Jewish background when dealing with the jihadists. In one scene he is asked if he is Christian. He says no, and -voluntarily- says his family is Jewish but not religious. Something tells me that was what sealed his fate. What was he thinking?
Overall a 7.5 rating is deserved.
A footnote: Daniel Perl worked for the North Adams Transcript and the Berkshire Eagle, according to the Wikipedia page on him.