It's good to know it's being looked into. I noticed some changes mentioned for the beta branch 1.5.8 and decided to give that a try. I stayed at war with the 2 nations I have been able to manage, and it seemed to last a long time. I thought it may have been fixed due to the length of time, but eventually back to back war was declared on me. Good news is that it seemed that they were only neighboring nations so that is definitely an improvement, and it took extra time for it to occur, but will still very much lead to my demise.