In the Dead Sea Scrolls' commentary of Habakkuk, the enemies of God's people are described as the Kittim. Originally, that word denoted Cyprus but later came to be more generally the Greek islands and eastern Mediterranean coasts or the Romans.
The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. Texts and Manuscripts of the Old Testament by Mark R. Norton, Page 176)