The ancient city has been besieged many times over the centuries; but the cannons could not make a single breach in its strong walls, nor did the huge chain of the Golden Horn give way to the enemy ships. Moreover, if Mehmed wants to take the city, he has to fight not only against the Byzantine Empire and the Christian world behind it, but also against the mighty grand vizier Çandarlı Halil Pasha, his biggest opponent in the state.
