Maybe this happens with some frequency, but I don't remember this ever being the case. I got the random event about potentially helping out my "brothers in faith" who are at war. Usually there's one or more giving options lit up, plus an option to not provide anything. On this occasion, the option to decline was not a choice - I had to give the Babylonians horses. Does anyone know what circumstances would make this a forced thing, as opposed to an option?