You know what, when I think about it you might be right. Hm, then I guess it takes some more effort for me to make a real impact in world history
If this conversation had occurred 30 years ago, you would have been correct! But it was redefined in 1983, I confirmed it moments ago.
Getting back to the actual question, it seems that nautical miles are not the same everywhere. Check the wikipedia article. I read it diagonally and I got that impression.