Trump wants to change the name of the Gulf of Mexico.. What is the new name and can he do it?

Other cases?

Some countries use their own names for certain places and bodies of water, such as the "Persian Gulf" adopted by Iran, while Arab countries, among others, call it the "Arabian Gulf."

Japan, North Korea, South Korea, and Russia also dispute the name of the body of water that connects the shores of the four countries, the "Sea of Japan." They prefer to call it the "East Sea," on the grounds that naming it after Japan dates back to the Japanese colonial era.

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