Charles Ellicott Commentary Nahum 2:1

"He that dasheth in pieces is come up against thee: keep the fortress, watch the way, make thy loins strong, fortify thy power mightily." — Nahum 2:1 (ASV)

Keep the munition. —Better, guard the fortress. These four sententious directions to Nineveh are, of course, ironic, like Elijah’s instructions to the priests of Baal in 1 Kings 18:27. He that dasheth in pieces may perhaps be identified with Cyaxares.