Why America and the world are so angry with North Korea?

1-America was the first country to invent a nuclear weapon and used it against innocent humans in Japan more than sixty years ago, and in Iraq 4 years ago (tactic neutron bombs were used secretly in Baghdad to end the battle) 2-More than 2000 nuclear test explosions were carried out since 1945 (1040 by America,... show more 1-America was the first country to invent a nuclear weapon and used it against innocent humans in Japan more than sixty years ago, and in Iraq 4 years ago (tactic neutron bombs were used secretly in Baghdad to end the battle)
2-More than 2000 nuclear test explosions were carried out since 1945 (1040 by America, 700 by Russia, 200 by France, etc ...) NK just started so what is the big deal?
3-North Korea is not war criminal as much as the US and Israel are.
4-North Korea needs nuclear bomb to protect itself from the continuous American threats.
5-If America and the west are truthful why they don’t start by their own selves, when they disarm they can start to ask others to disarm, otherwise they have no right to be angry with other countries that follow their footsteps.
6-Many scholars and politicians think America is the biggest threat to peace and not NK.
When hypocrisy and double standards will disappear and justice will prevail?
Update: When hypocrisy and double standards will disappear and justice will prevail?
Please answer my question logically and defend your answer if you can.
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