They are ignored as they've proven again and again that their words are not worth the paper that they sign, that they cannot be trusted. That they are as corrupt as an entity could be. That they are unwilling to make hard compromises ... nay ... any compromise whatsoever. Even when compromise enables them to declare "victory" and free their people from a lifetime of violence.

The conflict will continue until one side realizes that it has been utterly defeated. This hasn't happened yet. They have been defeated. They just don't want to admit it.