Hate to say it man, but you saw all of this happening and still did nothing to stop it. If you don't like somebody vulturing conquers, you have to kill them.
It's the same reasoning why I have absolutely no pity for NOPY. I was openly hostile to them the entire time I build up in Central America (although I was in a "sub" hahaha). They didn't even do anything when I took one of their relics and flew it DIRECTLY towards their other 3 relics with an army on it.
You create your own problems when you don't rule with an Iron Fist.