Well that came as a huge shock. Was playing as China, & found myself with Chandragupta's India to my South. We were initially getting along great, but the closeness of my cities to his was clearly starting to annoy him.....so he declared a surprise war on me. His own forces, alone, caught me off guard......but his Pre-Slav allies dwarfed his forces. Sadly Preslav were able to overrun one of my biggest cities, instantly razing it (I wonder if it would work better if it became independent in these cases?) I lost a commercial district, the government plaza and-worst of all-the Pyramids. I was able to repay the favour by using my envoys to undermine Chandragupta'a Suzerain status......but sadly the damage was already done. Is it wrong that I am considering going back to an earlier save?