The cycle - for them

Today's Guardian front page headline:

American beheaded in revenge for torture

From an editorial in the San Francisco Chronicle:

The stated rationale of the killers of Nicholas Berg - that they were avenging the sadistic abuse of Iraqi prisoners at Abu Ghraib - is not worthy of engagement in argument.

Matt Frei on last night's BBC news (seven and a half minutes into the programme, click top right):

Today's terrible video may be a distraction from the prisoner abuse scandal, but what it does show is that the cycle of violence seems to be getting worse.