Kim Jong Un calls for rapid ‘upgrade’ to nuclear arsenal amid claims the US is trying to ‘provoke war’

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North Korean dictator Kim Jong Un called for the rapid buildup of his nation’s nuclear arsenal on Tuesday, reacting to joint military operations by the U.S. and South Korea.

Kim called the military exercises an “obvious expression of their will to provoke war,” according to North Korean state media. The U.S. and South Korea began their annual military drills this week, dubbed Ulchi Freedom Shield, and operations will continue sporadically through September.

The North Korean leader argued the drills show the intent by the U.S. and South Korea to “remain most hostile and confrontational,” and that North Korea must therefore “rapidly expand” its nuclear arsenal.

“Through this move, North Korea is demonstrating its refusal to accept denuclearization and the will to irreversibly upgrade nuclear weapons,” Hong Min, a North Korea analyst at the Korea Institute for National Unification, told Reuters. 

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North Korean dictator Kim Jong Un called on his country to “rapidly expand” its nuclear arsenal. (STR/AFP via Getty Images)

The rise in tensions comes just days after South Korean President Lee Jae Myung announced plans to end some military activities along its border with North Korea, as well as restore a 2018 military agreement with its neighbor.

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The agreement ended some military activities at the border between the two countries, including creating buffer zones on land and sea and no-fly zones above the border to prevent fighting. It also ended military drills near the border and removed some guard posts along the Demilitarized Zone.

South Korean President Lee Jae Myung says his government is taking “gradual steps” to reduce tensions with North Korea. (AP)

The deal was signed at an inter-Korean summit in 2018, but it eventually fell apart as cross-border tensions ensued.

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South Korea also dismantled its speakers along the border that had broadcast anti-North Korea messaging for years, a move Pyongyang reciprocated.

Col. Lee Sung-jun, left, public affairs director of South Korea’s Joint Chiefs of Staff and Col. Ryan Donald, right, public affairs director of the United Nations Command (UNC), attend the press briefing for the Ulchi Freedom Shield 2025 exercise at the Defense Ministry on Aug. 7, 2025 in Seoul, South Korea. (Chung Sung-Jun/Getty Images)

Lee said his government would continue to make “gradual steps to restore the September 19 Military Agreement.”

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“I hope that North Korea will reciprocate our efforts to restore trust and revive dialogue,” he added.

Reuters contributed to this report.

Anders Hagstrom is a reporter with Fox News Digital covering national politics and major breaking news events. Send tips to Anders.Hagstrom@Fox.com, or on Twitter: @Hagstrom_Anders.