otcviper

I recently heard a speech which referenced an ancient Roman conflict called the Duecedes conflict. I'm sure that is not the correct spelling. It's pronounced "Due-sid-ah-dees", or something along those lines. I've googled the heck out of the web with many different variations and cannot find anything about it. It was also referred to as the Duecedes Trap. The subject was when a rising power challenges a ruling power. Any help you could provide would be greatly appreciated.