South Korea's Nuke Tests Deemed "A Mistake"

Hey all,

I noticed that the South Korean nuke tests was the topic of discussion so here is another article on the whole ordeal. It is quite evident that the IAEA is not too happy about it either:

The report clearly states, however, that the "failing to report to the IAEA was an objective mistake," and it appeared there was still the possibility South Korea's past nuclear experiment would be referred to the U.N. Security Council during the IAEA Board of Governor's meeting on Nov. 25.

Hmm, what was South Korea's response to all of this?