This is Cameron in defence of Andy Coulson this morning:
Of course I knew about that resignation before offering him the job. But I believe in giving people a second chance.
It is the second sentence that could be a worry. Remember Coulson resigned from the NOTW saying he knew nothing about the phone hacking, but took responsibility for what went on.
Why then use the phase “giving people a second chance”? This just exposes Coulson to further questions and does little to close the matter down.
If Cameron has not been told the full facts this story will just explode in his face.