North Korea is learning combat lessons fighting Ukraine, a US official said. North Korea is learning valuable lessons from fighting against Ukraine, making it an increased threat to its neighbors, a US official said. After brokering its alliance with Russia, North Korea has taken a defiant posture and on Monday tested a ballistic missile tipped with a hypersonic warhead. The timing seemed intended to showcase North Korea's capacity to overcome the defenses of the US and its regional allies. The UN has long sought to constrain North Korea's military program, specifically its ability to deploy nuclear weapons, by imposing severe sanctions.

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Persons: Kim Jong Un, Vladimir Putin, Kim Jong, Dorothy Camille Shea, Antony Blinken, Vassily Nebenzia, Joe Biden, Donald Trump, Kim Organizations: Ukraine, UN, UN Security Council, Reuters, Democratic People's, US Locations: Korea, Ukraine, North Korea, Russia, Kursk, DPRK, Democratic People's Republic of Korea, South Korea, stymie, Japan