Ah, are you still peddling this US-S. Korea conspiracy theory? And now Japan is part of it?
N. Korea is an outlaw state. It launches missiles and detonates nuclear bombs to threaten its neighbors. Are Japan, the US, and S. Korea launching missiles and detonating nuclear weapons? N. Korea only isolates itself with such actions.
And when are you going to support your claim that the US threatened Iran with a nuclear attack?
I have not a lot information and knowledge about N-K. I even don't know a little of its history and records. What I know about this country, its people and government is through recent news and regional events.
Since America promised Pyongyang, if they stop developing their nuclear programs, they will be included financial support of USA.
North-Koreans stopped their nuclear programs, but America didn't fulfill his promise. Thus the political war began between N-K and white House.
َAfterwards, N-Koreans started their nuclear activities again and even speed it up more than the past persistently!
America tended to a military policy and saber-rattling close to N-K borders, and also displaying his relationship with S-Korea that was an old and hateful enemy for N-Koreans!
Hereafter, I followed the news, and reports of events around N-K up to now.
I believe, both America and N-Korea did some wrongs in the political struggle. First America that supposed it can drive out N-K from its positions forcefully, second N-K that used nuclear threat and attacking cities of America.
And now Japan is doing mistake.