The Siege of Tyre was not simply a battle. It was an engineering war against geography itself. Tyre was a Phoenician island city nearly a kilometer offshore, shielded by high walls and a capable navy. Alexander could have sailed past it. Instead, he chose dominance. Leaving Tyre unconquered would leave a hostile fleet at his back as he moved toward Egypt. So he made a decision few commanders would dare. He ordered the construction of a massive mole, a stone causeway built from the mainland to th