Conditions for using Diplomacy "attack Faction"

[canadian]

Hey guys, right now I'm starting an early byzantine campaign and want to follow some techniques used in actual history. I want to try and influence the Cumans into attacking Hungary. I'm hoping this will confuse both enough that I can focus at the Turks for a bit. What kind of offers do I need to make in order to convince them to attack?

[Desperado Outlaw]

Money, a lot of money.

[Duck of Death]

Also, gift them a shrubery!

[Vissewalde rex de Gerzika]

Marriying a princess to their FH/FL will work well, especially if the princess is beautiful, but often it will be problematic because often they will already be married, so an assasination or 2 might be handy.

[Mr.Lannister]

^^^^^That, money and cheats are good...

Spoiler Alert, click show to read: 

Sometimes i cheat myself some 100.000 florins and pay them those pretty money so they can be mine

I have confessed my bloody sin.

[Lord Dakier]

Its the worst diplomatic feature anyhow as they don't have to attack. This was greatly improved in Shogun 2 with the request to join war.

[joex49]

can't they edit the AI into attacking the disered faction? so this diplomatic feature works? on a side not, has this ever worked for somebody else?

[Judeman266]

Sometimes they block ports but rarely do they attack. They have to be close in proximity and it's better if they already have bad relations.