Lets not forget that although Blair is responsible for that illegal war, the only reason he got it through parliament is because he got support from the Tory party, who said of course they would have gone to war if in office - it was not even a question.
That war was not representative of Labour generally and some Labour MPs resigned over it.
The UK was in far better shape under new Labour and now it’s become an absolute joke and a horrible place to live, thanks to the Tories and bastard Brexit.