Which nation did God say He was raising up in Habakkuk 1?

Answer: The Chaldeans

God answered that He was raising up the Chaldeans, a ruthless and impetuous nation seizing dwellings not their own.

““Look at the nations and observe—be utterly astounded! For I am doing a work in your days that you would never believe even if someone told you. For behold, I am raising up the Chaldeans—that ruthless and impetuous nation which marches through the breadth of the earth to seize dwellings not their own.”— Habakkuk 1:5-6 (BSB)