'Fortress' in the Bible

I saw the vision, and as I watched, I was in the fortress city of Susa, in the province of Elam. I saw in the vision that I was beside the Ulai Canal.

In the place of the king of the South, one from her family will rise up, come against the army, and enter the fortress of the king of the North. He will take action against them and triumph.

“His sons will mobilize for war and assemble a large number of armed forces. They will advance, sweeping through like a flood, and will again wage war as far as his fortress.

His forces will rise up and desecrate the temple fortress. They will abolish the daily sacrifice and set up the abomination of desolation.