Kim also addressed domestic issues in his speech, saying North Korea would begin its long-delayed rollout of Covid-19 vaccines in November. He didn't specify how many doses it would have, where they would come from, or how they would be administered across his population of 26 million people.
GAVI, the nonprofit that runs the UN-backed Covax distribution programme, said in June it understood North Korea had accepted an offer of vaccines from China. GAVI said at the time the specifics of the offer were unclear.
Kim's speech came a day after South Korea extended its latest olive branch, proposing a meeting with North Korea to resume temporary reunions of ageing relatives separated by the 1950-53 Korean War, which were last held in 2018.
Experts say it's highly unlikely North Korea would accept the South's offer considering the stark deterioration in inter-Korean ties amid the stalemate in larger nuclear talks between Washington and Pyongyang. The US-North Korean diplomacy derailed in 2019 over disagreements in exchanging the release of crippling sanctions against the North and the North's denuclearisation steps.
The US-led diplomatic push to defuse the nuclear standoff has been further complicated by an intensifying US-China rivalry and Russia's war on Ukraine, which deepened the divide in the UN Security Council, where Beijing and Moscow have blocked US efforts to tighten sanctions on Pyongyang over its revived long-range missile tests this year.
Kim has dialled up weapons tests to a record pace in 2020, launching more than 30 ballistic weapons, including the first demonstrations of his intercontinental ballistic missiles since 2017.
US and South Korean officials say Kim may up the ante soon by ordering the North's first nuclear test in five years as he pushes a brinkmanship aimed at forcing Washington to accept the idea of the North as a nuclear power and negotiating concessions from a position of strength.
Experts say Kim is also trying to strengthen his leverage by strengthening his cooperation with China and Russia in an emerging partnership aimed at undercutting US influence.
US officials said this week the Russians are in the process of purchasing North Korean ammunition, including artillery shells and rockets, to ease their supply shortages in the war against Ukraine.
North Korea also has joined Russia and Syria as the only nations to recognise the independence of two pro-Russia breakaway territories in eastern Ukraine and has discussed sending its construction workers to those regions to work on rebuilding.