We now commence the second circle of the first division of our book, in which are contained Isaiah's prophecies concerning the nations and the world. The first describes the doom of Babylon. Whereas the word "Babylon" occurs here, there is no doubt Assyria is in view. The prophecy concerning Babylon comes later (21:1-10). This is clearly shown by Dr. Thirtle in his Old Testament Problems.
In graphic language the prophet foretells the nearness of judgment. He describes the mustering of the hosts, and then their marching. He next declares the purpose of the judgment. It is to punish evil. Finally he describes the process of judgment. Media is to be against Assyria, and the result will be abiding ruin.
The issue of this judgment is intended to be the restoration of Israel through the compassion of Jehovah. He will yet choose them and set them in their own land. The peoples who have oppressed them will submit themselves to them and serve them, and they will rule over their oppressors.