What have been the main criteria for determining a ‘just war’?

Built into Just War theory are conditions both about going to war in the first place – JAB: ‘Ius ad bellum’,  and then specifically about conduct during the war – JIB: ‘Ius ibello’.
The JAB checks on whether or not war is justified include the following:
       · clear evidence of wrong having been done, warranting corrective justice
       · judgement to be made by persons in proper positions of authority
       · reasonable likelihood of success, ie an outcome which is better than would have been without such intervention
       · last resort, in that all other options, pleas and negotiations have been tried and failed
       · right motive and intention that actually has the interests of both defendants and enemies at heart.
The JIB checks on just conduct within the war itself include the following:
       · the degree of violence used should be proportionate to the wrong done
       · the violence should be the minimum necessary to achieve a successful outcome
       · special care should be exercised in relation to civilians, especially women and children
       · the right not to participate should be respected