Board Thread:Manga/@comment-32377911-20170628234245/@comment-27321453-20170629001453

Probably because Eren wants all the Titans dead, and if there are no Titans, what else is there for the Coordinate to control.

Kruger mentioned that the king never intended on unleashing the Wall Titans, rather he only said it as a threat to acquire temporary peace, since he made a pact or something with the Founding to renounce all war and was fine with Eldia falling.