Until then, accept that you're indulging in bilateral (UK + US) armed conflict.
But you ain't at war. No way, no how. Who are you declaring WAR on?
And we're not on a war footing, either; that means conscription, and all the shit that goes with that.
Whine all you like, but the evidence (huge contracts awarded to American companies (Halliburton, for one)) indicates that the reason we're in Iraq is pure and simple business.