Arabia - 23
Austria - 7
Aztec - 17
Babylon - 14
China - 25
England - 24
Ethiopia - 22
Germany - 19
Inca - 21
Korea - 23
Maya - 24
Mongols - 0
Persia - 8
Poland - 23
Portugal - 18
Shoshone -15
Siam - 21
Sweden - 12
Zulu - 22
Hate to be voting for Poland again, but these guy's are definitely higher tier then most of the high tiers in here, they're somewhat on the boring side, but free policies is incredibly powerful, not to mention +15% production in every city, extra cash from pastures, what's not to like, really? I mean christ, China is so high up mostly because of it's UB, and the only thing that that does is give 2 gold, with 2 sheeps and a horse in a city Poland has them beat, not to mention a flat 15% production bonus on everything.
The mongols used to be one of the most fun civs to play, but all the nerfs to warring really screwed them over, the only thing they really do at this point is allow the player to start warring about an era earlier, and leaves you with a load of horse unit's who's promotions don't do anything for the cavalry they'll upgrade into.
In vannila and GnK the strongest warmonger in the game, but when you take away all the usefulness and fun out of early warmongering (the AI instantly hating you is one thing, but managing your happyness and cashflow just takes all the fun away) they just become obselete.
I really wonder if they intended to only make warring viable once ideologies kick in with their insane happyness boosts, either way, perhaps Firaxis fixes this idiotic metagame at some point and we'll see the mongols rise to glory again in a elimination thread half a year from now, but for now, they're out.