What is the reason, for a war against Iran ?

Well... he said much more than that.

indeed he did, he also said it wouldn't work.

I really can't see a good reason why you bring this up in this thread...

It is to illustrate a pattern in your responses, much like some here get a red white and blue mist obscuring their vision and rationality when it is their nations policies involved.
That is why I always like to use Israeli sources when I know you you are going to try and take issue with the subject instead of actually addressing it