Arathorn said his report was discombobulated... indeed so! He talks about our sipahi surrounding Carthage. We're at war with Persia and the troops are outside Persepolis.

"Rome is at war with Persia. Rome has ALWAYS been at war with Persia..."
Anyways, I crank up research to max on Steam Power; it'll greatly simplify logistics of moving more troops. Also, we could make use of Universal Suffrage, although I won't bother with a prebuild since we'll surely get a GL.
Our size-12 cities without cathedrals are swapped to them; even with all eight luxuries they're barely staying content - 6 happy/6 unhappy, which war weariness will mess up.
Inbetween turns, two Persian sipahi attack Antioch, which only had two defenders.. and survives with 1 HP on the last defender. Gotta watch out for those 3-move units...
1405: Shanghai falls to only two Sipahi attackers. Sipahi move into position to join with the shiploads of Berserks to take Pasargadae. Going to take Persepolis once the Hwach'a get there.
Dang, we have a lot of boats, and it doesn't help that the galleons look so similar to the men-o-war...
Antioch flips back, eliminating four sipahi
1410: Antioch recaptured. Pasargadae captured (probably should have razed it; it's also in Persepolis' shadow.)
Carthage and Scandinavia MPP.
1420: Arbela captured.
1425: Our people want to build the Iron Works! In, uh, Syracuse, a marginally useful size-6 city.
Tarsus razed, alleviating cultural pressure on several of our new holdings. And we got a Great Leader, who I'll save for Universal Suffrage.
Antioch flips again, this time wiping out our ten-jaguar garrison company.
1430: Hwach'a begin bombarding Persepolis.
The VIKINGS capture Antioch.
1440: Our sipahi grow bored while waiting for the Hwach'a to pound Persepolis, and go raze Tyre.
1445: Antioch flips AGAIN, from the Vikings back to Persia.
1450: The hwach'a howl, the sipahi shriek, the cossacks charge, the armies advance, and Persepolis is plundered. I couldn't bring myself to raze the Pyramids, though. The city is down to size three, so it shouldn't be a big pain.
And that was the killing blow. We also took two more cities this turn (including Antioch for the fourth time). We're positioned to take three of the four remaining Persian cities on the continent next turn. I also diverted two boats towards the north-central island.
We've got a fairly haphazard rail net coming along on the home continent.
Two settlers and the Great Leader are in Artaxata (which we founded so it's flip-proof.) Next leader gets to decide what to do with them, and play Rush-the-Temples, and, well, the boring parts of a domination win.
http://www.civfanatics.net/uploads3/rbp4-menagerie-1450ad.zip