Why It's Important To Be In The United Nations!

In the DC Universe, treacherous Russian fisherman are really up to date on international diplomacy, it seems:

Well, that kinda sucks. Why is that? One Atlantis is in, but the other is out? I call discrimination!! Come on, United Nations, Mer lives matter!!

Actually, I'm surprised that Geoff Johns never spun this little factoid into a 6-part arc...

From Action Comics #475 (1977)