Against Damascus, the metropolis of the Syrians, and the head of that kingdom, Isaiah 7:8; as was prophesied, Amos 1:5. Kir; not Kir of Moab, Isaiah 15:1, but a part of Media, which then was subject to the king of Assyria.
Related Commentaries of 2 Kings 16:9
2 Kings 16:9
9 And the king of Assyria hearkened unto him: for the king of Assyria went up against Damascus,b and took it, and carried the people of it captive to Kir, and slew Rezin.