Carl Bernstein has some serious questions about Sony's decision to pull "The Interview" from theaters ... and he's planning on digging for answers.
The legendary journalist talked to our photog just after the news broke Wednesday afternoon ... saying he hopes Sony made the move because of a credible threat and not out of cowardice.
Bernstein said he'll call his sources to find out if Sony was justified based on real threats ... and the guy clearly has sources.
We spotted Bernstein again later that night (random, right?) where he wondered out loud whether or not it was a good idea to make a film about assassinating a foreign leader in the first place.