Actually, I have a family friend who's actually at my house right now who lives in Denmark. Canada and Denmark go back and forth on claiming it. How do they do this? Exchange flags and leave a six pack for the other army.
Literally.
They actually did sign an agreement yesterday.
https://www.cp24.com/news/whisky-war-with-denmark-over-tiny-arctic-island-ends-peacefully-with-deal-1.5945737?cache=yes%3FclipId%3D89680%3FautoPlay%3Dtrue
Hans Island, a barren, uninhabited island between Ellesmere Island and Greenland. Canada and Denmark have both claimed it, but have settled their dispute by dividing it.