Armenia keeps sending tiny, piecemeal forces to attack Hatra (because my Hatra garrison is equally tiny) but I keep driving them off, and I can't take the fight to Armenian soil because I'm devoting all my energy to conquering Egypt and Parthia. Pontus tried to take Tarsus and that extreme western city (forgot the name) but both times they were beaten off, and I am currently gathering an army to invade Pontus.
Anyway, here's the problem. All four eastern factions have an extreme amount of missile troops. At least half of every army I meet is made up of them. And my armies, made up mostly of hoplites and levy pikemen (hey, it's early in the game), are taking quite a beating. I don't have time to make my own archers and at this stage I can only make militia and Greek cavalry, both of which suck. The only good cavalry I can get are chariots and elephants, and occasionally the Bedouin (or was it Arab?) cavalry, and even those are vulnerable to missiles.
So here's the question. How the hell do you kill those guys who throw stuff at you?