Just wanted to add, in case anyone’s interested:
The “two horns of a bull” comes from classical battle tactics. A common tactic for an advancing army was to form yourself in the shape of the head of a bull. The main army would be in the middle and there would be two “horns” either side closing in. The idea was to entrap the enemy in the middle.
The enemy couldn’t approach the “head” of the bull because that was where the main bulk of the army would be. They had to assume that one of the “horns” would be weaker than the other one and so attack that one. This was the only way to defeat the bull formation.
But which horn do you attack…?