Everyone knows you need Greenland if you want the 5-army bonus for owning North America!
The letter:
Trump wants Greenland, and being snubbed by the Norwegians, who didn't award him the Nobel Peace Prize, has turned him slightly from his peaceful ways.
Trump right about now when it comes to Greenland:

Norwegian Prime Minister Jonas Gahr Støre responded by confirming he had indeed received a text from Trump:
Germany already sent its soldiers back home from Greenland.
You're up, Sweden, Norway, and France!
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