When playing as the Dwarves (Balin Exp) I allied Elrond and Defensively with Aragorn. After Balin died, (now almost 100 years later) there is still an defensive alliance with Aragorn. He even keeps calling him into wars even though he is dead, but still a participant. I cant make a new alliance because the slot is already filled with dead Balin.

My brother in Erebor made an Alliance with a King of Dale. He died, but now 30 years later he cant declare war, because of that alliance still being active. There is also no possibility of breaking this alliance.

What to do? How to fix?