The LORD replied, "Look at the nations and be amazed! Watch and be astounded at what I will do! For I am doing something in your own day, something you wouldn't believe even if someone told you about it.
I am raising up the Babylonians to be a new power on the world scene. They are a cruel and violent nation who will march across the world and conquer it.
References for Habakkuk 1:6
They are notorious for their cruelty. They do as they like, and no one can stop them.
Their horses are swifter than leopards. They are a fierce people, more fierce than wolves at dusk. Their horsemen race forward from distant places. Like eagles they swoop down to pounce on their prey."
"On they come, all of them bent on violence. Their hordes advance like a wind from the desert, sweeping captives ahead of them like sand.
They scoff at kings and princes and scorn all their defenses. They simply pile ramps of earth against their walls and capture them!
They sweep past like the wind and are gone. But they are deeply guilty, for their own strength is their god."