Another diplomacy question

[Megalos Danielos Psychopatos]

Welcome,

at the beginning-soorry for my english:p.

I would like to know if console commands diplomacy_mission and diplomatic_stance works? And if so, how to use first one? Second thing is about diplomats: it looks like AI controlled factions "make politics" by their emissaries (there's a lot of them on the campaign map). I wonder if i would send assasins to kill them, will this prevent AI controlled factions from making for example peace threaties or alliances against me ? I also would like to know exactly how it is with proposal/demand:"attack faction"-it concerns only single battle? every next battle? next turn battle only? or it means help in whole war?
Last thing: giving small amount of mnai makes other factions more frienldy to me, but it's same when i make single payment every turn or give regular tribute?Is it equal?

Thx for help.


EDIT: I found in web information about some some kind of diplomacy manual;it contains "mathematic" explanation of dipl mechanic: depends on what nation u are and what they are...how many influence point has ur diplomat and how many they have...what allies u have and what they have...how did u behave during game-did u keep alliances or not, did u help ur allies or not...what cultur u are and what are they....
...is there such thing?


EDIT: I've been talking about this http://cicero.modwest.com/writing/RTWDiplomacy.pdf guide. What do U think about it?