So any country that trades with Western countries doesn’t have a right to exist?
I will point out that both China and Russia trade with the United States.
The argument that there’s no such thing as the South Korean people because they used to be in the same country is interesting. Globally were one human race, but we have a variety of countries determined by who can defend their borders.
I wonder and under what circumstances in your philosophy would a group of people be allowed just to separate from their parent country?