Point 3 there is enough to keep quite a few diplomats busy. https://en.wikipedia.org/wiki/Sea_of_Japan_naming_dispute https://en.wikipedia.org/wiki/Sea_of_Japa

Point 3 there is enough to keep quite a few diplomats busy. https://en.wikipedia.org/wiki/Sea_of_Japan_naming_dispute https://en.wikipedia.org/wiki/Sea_of_Japan_naming_dispute https://en.wikipedia.org/wiki/Persian_Gulf_naming_dispute https://en.wikipedia.org/wiki/Persian_Gulf_naming_dispute https://en.wikipedia.org/wiki/West_Philippine_Sea https://en.wikipedia.org/wiki/West_Philippine_Sea ...and that's before even getting into maritime boundary/exclusive economic zone disputes.