Here is a few that seem to up your diplomacy score:

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Trigger 0096_Increase_Global_Standing_New_Turn
WhenToTest FactionTurnStart

FactionStanding global normalise 0.0 200
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Trigger 0097_Increase_Global_Standing_When_Allied
WhenToTest UpdateAttitude

Condition DiplomaticStanceFactions = Allied

FactionStanding global normalise 1.0 400
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Trigger 0099_prisoners_released_increase_global
WhenToTest FactionLeaderPrisonersRansomedCaptor

Condition RansomType release
and NumCapturedSoldiers > 80

FactionStanding global 0.02
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