According to the North Korean regime, it was now capable of carrying a large nuclear warhead and reaching all US territory.
"The rapid development of North Korea's nuclear force is now exerting big influence on the world political structure and strategic environment," Kim said in his opening address.
"Nobody can deny the entity of North Korea which rapidly emerged as a strategic state capable of posing a substantial nuclear threat to the US," Kim said.
The leader also stressed that Pyongyang was facing "grave challenges that should not be overlooked", although he called on the North Korean people to be "optimistic about progress of our revolution under this situation" instead of feeling "disappointed" by or "afraid" of such challenges.
The US-drafted resolution were aimed at further cutting Pyongyang's access to hydrocarbons and order the repatriation of North Koreans working outside the country, according to diplomatic sources.
Washington argues that the income earned by many of these workers in places like Russia or China is used by Pyongyang to finance its nuclear and missile programs.
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