They have helped the children of Lot.
Asaph, Psalm 83:8
So the totally obscure Assyrian heartland was geographically located where? In the north-central part of modern-day Iraq, as seen in this Goggle Earth satellite image below and in the image at the top of this post. This region is also known as the Assur-Nineveh-Arbela triangle which survive to this day, respectively, as the modern Iraqi cities Qala'at Sherqat, Mosul and Erbil. Assur in Psalm 83:8 is Iraq.
Iraq is an artificial, man-made construct that is geographically divided between the Sunni populated northern and western three-fourths of the country and the Shi'a southeastern quadrant. Ancient Assur lies wholly within in the northern Sunni section; the remainder is Shi'a dominated and closely tied to Shi'a Iran and ancient Elam.
We are informed in verse 8 that Assur helps Lot's progeny. Lot's children constitute modern-day Jordan, and there are real-world ethnic and tribal links that cross over the equally artificial Iraqi-Jordanian frontier. In fact, as mentioned in earlier posts referenced above as an essential part of this post, the help (zĕrowa`) provided by Iraq dates back to the 1948 war and every war since then in which Israel squared off on the battlefield against Jordanian forces there were Iraqi battalions and their commanders also in the fight.
It would seem that something also needs to occur respective to the cohesion of the present Iraqi nation. Perhaps that something is related to Jeremiah 49:34-39, or perhaps to the Sunni-Shi'a civil war that is ongoing in Aram-Syria at this time, or both. In any event, the Lord specifically identified Assur in verse 8 and the expected paradigm-shifting events are likely more widespread that we currently are able to envision.