And you have to remember, after Alexander the Great, all of these western rulers, especially the Romans, they all had their sights on Persia. They said, hey, maybe I can be just like Alexander the Great and take over the Persians. So Mark Antony is planning his invasion of Persia, but he doesn't get the troops that he wants from Octavian. And so that starts to build the tensions even further, but he goes to his lover, Cleopatra, who is the richest woman in the world, the pharaoh of Egypt, and says, hey, can you give me some Egyptian troops? And so he plans an invasion of Parthian Persia with a combined Roman and Egyptian troops. Now, unfortunately, that is a failed invasion. As they try to make their way in, they get pretty far, but they weren't able to protect their supply lines carefully.