Probably on or under the surrounding waters, at a guess. NK smuggles all sorts of stuff in and out of the country. https://ig.ft.com/north-korea-oil-smuggling/

Probably on or under the surrounding waters, at a guess. NK smuggles all sorts of stuff in and out of the country. https://ig.ft.com/north-korea-oil-smuggling/ https://ig.ft.com/north-korea-oil-smuggling/