When warning a nation, under what conditions do you get a call to arms?
I am playing as Ming and have sent a warning to Orissa and Ayutthaya. According to eu4wiki: "This will give you a call to arms if the target country attacks one of your neighbors. Country A cannot warn country B if B has already warned A. Lasts 20 years." However, Orissa and Ayutthaya seem to be at war with each other now and I did not receive a call to arms. Is this broken, or are there some conditions that the war must fulfill for the warning nation to receive call to arms?
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