[justa-hairyape]

"Should the U.N. Security Council attempt further provocations, our further self-defense measures will be inevitable in response," the North's foreign ministry said in a statement carried by the official Korean Central News Agency.

Looks like a translation problem. The following makes more sense.

"Should the U.N. Security Council attempt further penalties for our provocative actions, additional offensive measures will be inevitable," the North's foreign ministry meant to say in a statement carried by the official Korean Central News Agency.

[TigerLikesRooster]

That is the real meaning. I read the Korean text of their announcement. It did say, “self-defensive measure,’ even though it is patently clear what it really is.