https://www.reuters.com/article/us-mideast-crisis-islamic-state/u-s-ally-declares-islamic-state-defeated-caliphate-eliminated-idUSKCN1R407D
... just like the President predicted.
He said something like: They are a small dot now, and that dot will be gone by tonight. (my paraphrase/recollection)
Barr wants to covey principal findings of Mueller report tonight.