I would think the only thing he could be reasonably referring to was WW 2. Even then, the problem wasn't the specter of a German invasion, it was the use of Greenland as a staging area for flights between the US and Britain.
I would think the only thing he could be reasonably referring to was WW 2. Even then, the problem wasn't the specter of a German invasion, it was the use of Greenland as a staging area for flights between the US and Britain.