North Korean leader Kim Jong-un visited the naval destroyer Kang Kon to oversee a navigation test, state media said Saturday, stressing the need to enhance the navy's capability to deter a nuclear war.The Saturday report came as Beijing and Pyongyang announced Chinese President Xi Jinping will visit North Korea from June 8 to 9, after Xi hosted back-to-back summits with US President Donald Trump and Russia's Vladimir Putin last month.Kim has in recent years vowed to strengthen North Korea's naval capabilities, and in May last year oversaw the botched launch of the destroyer Kang Kon, which was later repaired and relaunched a month later. During the trip on Thursday, Kim stressed the importance of rapidly developing the naval force into a force "capable of reliably taking charge of a part of the nuclear war deterrent", Pyongyang's official Korean Central News Agency (KCNA) said.Building a navy capable of delivering a "deadly blow" to enemies above and below the water is a core goal of the ruling party's current five-year defence development plan, Kim said.The North Korean leader visited the vessel with top officials and his daughter, Ju Ae, images released by Pyongyang's state media showed. Since North Korean leader Kim Jong-un's 2019 summit with Trump collapsed over the scope of denuclearisation and sanctions relief, Pyongyang has repeatedly declared itself an "irreversible" nuclear state.Kim has since been emboldened by the war in Ukraine, securing critical support from Moscow after sending thousands of troops to fight alongside Russian forces. Last year, Kim appeared alongside China's Xi and Russia's Putin at an elaborate military parade in Beijing -- a striking display of his new, elevated status in global politics.North Korea plans to build a 10,000-tonne destroyer and develop secret underwater weapons. 'The Rodong Sinmun' newspaper, reporting on a naval test supervised by leader Kim Jong-un, said he ordered the navy to deploy the destroyer Kang Kon and another 5,000-tonne warship, the Choe Hyon, as soon as possible.The newspaper did not give further details. It is the first time North Korea has mentioned a plan to build a 10,000-tonne destroyer, said Hong Min, a senior analyst at South Korea's Institute for National Unification.Kim may be seeking to showcase the country's military capabilities ahead of Xi's visit, Hong said. Xi is making his first visit to North Korea in nearly seven years as Beijing looks to reassert ties with Pyongyang, its only formal treaty ally.Before the visit was announced, Kim on Thursday called for an "exponential" expansion of North Korea's atomic arsenal during a visit to a newly operational nuclear material production factory.North Korea said in May 2025 that a 5,000-tonne destroyer had partially capsized during a launching ceremony in Chongjin port. Kim, who was overseeing the ceremony, condemned the accident and called it a "criminal act" that could not be tolerated.After the ship was repaired at Rajin port, a second launching ceremony was held the next month, when the vessel was named the Kang Kon.