An article in one of last week's papers details a quote from 'Monty' as to his pre-requisites for war. I think they deserve repeating here.
1. A clear objective that is desirable to realise nationally.
2. The means and the will to realise this objective militarily.
3. The ability to ground the recourse to force legally.
4. The ability to defend that course of action at home and abroad, morally.
I wonder how many of these we can truthfully say yes to?