Please tell us where you draw the line on your slippery slope.
I would have thought that was pretty obvious....
When it stops them from continuing their Terrorist agenda.
I do fear that the level of brutality (civilian casualties) that a winner in this war would have to aspire is too high a standard for the USA to meet. We will be unable to pull the trigger in time and will therefore lose the war by an activated fifth column in our own country(democrats). We are fighting a house to house battle against a foe that can re-populate a terrorist dwellings faster than we can progress against them.