User talk:2600:1700:DF70:BBA0:F0EB:81A1:3F67:12F2

re: usps to N Korea.
If you go to the USPS website and go thru menus to find cost of letter to N Korea you get this:

"USPS.com home Retail Postage Price Calculator

Start Mail Services

Mail Services No Mail Services were found."

It is at this URL:

https://postcalc.usps.com/Calculator/MailServices?country=10233&ccode=KP&omil=False&dmil=False&mdt=11%2F9%2F2020&mdz=16%3A59&m=20&ct7=True

I think there is currently no mail service to N Korea.