Context: The Netherlands had some interesting ideas about what should happen to Germany post-WWII. Like annexing the very Dutch cities of Cologne, Aachen and Münster. I mean... Keulen, Aaken and Munster.
Also, from the Wikipedia article:
In its most ambitious form, this plan included the cities of Cologne, Aachen, Münster and Osnabrück, and would have enlarged the country's European area by 30 to 50 percent. *The local population had to be either deported, or, when still speaking the original Low German dialects, Dutchified.*