[quote=So Boerd]
He said cease hostilities. That does not mean rollback other wars that are already over.
[/quote]

Arguably, this is all part of the same war. One could say the war began the moment the Dutch invaded Belgium. I might be missing some bits here and there, but it seems to me it was at around that time that hostilities truly began. The annexation of Belgium is one of the key reasons for the war, or at least it seems so from my perspective.