With no defeats in his campaign, Alexander was prepared to turn his army and march to Babylon, where he hoped he could take over the city and be crowned King of the Persian Empire. But before he could do so, Darius III sent a letter asking for his wife and children to be given back. Additionally, he attempted to form a treaty with the Macedonian king, allowing him to control half of the Persian lands whilst Darius controlled the other half. Unfortunately for the Persians, Alexander did not want shared leadership. He wanted it all, and absolutely all of it.