Further to these reflections of mine on so-called 'radicalization', here's Christopher Hitchens doing the Times's 'What I've learnt' feature (sub required). One of the things he's learnt:
I have nothing but contempt for humanitarian peaceniks... They blame the death toll on anybody but the murderers.
I don't know if Menzies Campbell is best described as a humanitarian peacenik, but I do know what these sentiments are best described as:
As Baroness Manningham-Buller pointed out in her carefully weighed evidence last week, a generation of young British Muslim men became susceptible to radicalisation (you could argue that it is remarkable so few succumbed) because of their distaste for the Iraq adventure. [Italics mine.]
See also, in the same connection, 'Moral Philosophers of our Time'.
