I there a way to turn off or mod away the requirement to join an AI in a defensive war? I'm Rival with Persia and they are attacking a moderately sized country in India but if I click on Persia and try to diplo them for a white peace for which they'd refused so I could join into the war it says I can't do it since I need an absurdly high opinion modifier of India. Very STUPID that I can't project my power over a rival by joining against them in a petty war, better the defender whom I don't care 2 cents about wins rather than a rival!!! Am I missing something here, like is there any other way to join into ongoing wars?
Edit: I can obviously increase their opinion of me but that's not where the restraint is, it lays in my country not having a positive opinion of the defender while in fact my opinion of them is far greater than that of my Rival whom I trying to join against! I think the game should compare the two modifers and if you have a -170 for example on your rival and the defender is a -30 yeah you don't like them, but you like them ore so than your rival which should be reason enough to join in their defense!