Are you familiar with King Cyrus and his role in biblical times? Babylon took Israel into captivity for 70 years during Daniels life. Babylon's defenses were impregnable, the walls thick enough to hold chariot races on top of them, and the moat was a river that ran around and through with deep reaching bars to stop invaders with boats. Cyrus dammed up the river, they walked in under the bars and were inside the city several days before the populace even knew they were under siege......cool how history repeats its self with Divine intervention and even more awesome is the similarities to what we are witnessing today