Assyria has entered Aiath: Isaiah 10:29–32 describes the march of the Assyrian army in poetic language. The cities are listed in order from the north toward Jerusalem.
The army moves closer and closer to the city. When they reach Jerusalem, they are forced to stop and retreat.
God was with Jerusalem. Because of this, Assyria would not succeed. In time, Assyria itself would be destroyed.
This passage may refer to Sennacherib’s invasion in 701 BC (see Isaiah 36–37). However, it could also describe an earlier or later invasion.