Kim spoke Thursday at a defence exhibition where North Korea displayed some of its most powerful weapons, including intercontinental ballistic missiles designed to target the US mainland as well as artillery systems and drones, according to text and photos published by the North's Korean Central News Agency. While meeting with army officers last week, he had pledged a "limitless" expansion of his military nuclear program

Kim has yet to comment directly on Donald Trump's reelection as US president. During his first term, Trump held three highly orchestrated summits with the North Korean leader in 2018 and 2019, before the diplomacy collapsed over disagreements on exchanging a relaxation of US-led economic sanctions with North Korean steps to wind down its nuclear program

During the speech at the exhibition, Kim touched on the failed summits without naming Trump

"We have already gone as far as possible with the United States with negotiations, and what we ended up confirming was not a superpower's will for coexistence, but a thorough position based on force and an unchangeable invasive and hostile policy" toward North Korea, Kim said

Kim accused the United States of raising military pressure on North Korea by strengthening military cooperation with regional allies and increasing the deployment of "strategic strike means," apparently a reference to major US assets such as long-range bombers, submarines and aircraft carriers. He called for accelerated efforts to advance the capabilities of his nuclear-armed military, saying the country's only guarantee of security is to build up the "strongest defence power that can overwhelm the enemy"

Kim's expanding nuclear weapons and missile programs include various weapons targeting South Korea and Japan and longer-range missiles that have demonstrated the range to reach the US mainland. Analysts say Kim's nuclear push is aimed at eventually pressuring Washington into accepting North Korea as a nuclear power and to negotiate economic and security concessions from a position of strength

In recent months, the focus of Kim's foreign policy has been Russia as he tries to strengthen his international footing, embracing the idea of a "new Cold War" and aligning with President Vladimir Putin's broader conflicts with the West

Washington and its allies have accused North Korea of providing Russia with thousands of troops and large amounts of military equipment, including artillery systems and missiles, to help sustain its fighting in Ukraine. Kim in return could possibly receive badly needed economic aid and Russian technology transfers that would possibly enhance the threat posed by his nuclear-armed military, according to outside officials and experts

North Korea also held a major arms exhibition in July last year and invited a Russian delegation led by then-Defence Minister Sergei Shoigu, who was given a personal tour by Kim that included a briefing on the North's expanding military capabilities, in what outside critics likened to a sales pitch