The North Korea flag emoji has a red star inside a white circle against a red band. The top and the bottom has a blue stripe each.
The 'north east arrow' emoji is a text-based symbol that has been around since Unicode V1.1, and should be supported by just about every device and browser. As a standard symbol, you should also be able to copy and paste the 'north east arrow' symbol (or the HTML entity ↗) in you...