It's easy to pose all macho and righteous on this issue. But there's a reason journalists protect sources; on balance it helps them do their job, even with the reality some sources abuse the confidence to dissemble.

And what happens when Carr mistakenly believes a source lied, burns them, but then discovers the source was telling the truth? The betrayal of confidence and repercussions for the source may be irreversible.

Arrignton made a similar pledge that TC would promise to respect embargoes, but then break them. How many embargoes has TC broken since?