ISIS on the offensive in Iraq

[Furunculus]

This isn't a moral question so much as a practical one - there's no point occupying somewhere at all if it's not going to have a net positive affect on the occupied.

that is a moral position.
it is also a position i broadly agree with, and i say this as someone who supported the iraq war in 2003.
hague would probably call it "the enlightened national interest".

i made two mistakes:
1. in underestimating the colossal mess the occupation would make in not occupying iraq. disbanding the army and de-baath'ing the government was idiocy. rumsfelds light-weight invasion was brilliant, his light-weight occupation was stupid. when castigating the coalitions disgraceful lack of post-war planning, how do we assess the wilful intransigience of Clare Short in preventing her DfID department from contributing to post-war planning?
2. in overestimating the capability to the british army to take part in 2003 while continuing afghan. arguably, in joining in with iraq we prolonged the bloodshed in Afghanistan by five years through neglecting the country at a time when it needed our political and military attention.

i'm not one of those getting my knickers in a twist over illegal wars. as far i am concerned there was legitimate motive for doing so, and parliament said yes, end of. that does not mean however that we should have done it, because it fails your test above, and in so failing likewise failed to make the act in our national interest, let alone enlightened.