Ukraine is fighting a war against two nuclear weapons countries: Russia, a signatory of the non-proliferation treaty, and North Korea, which is not. Since 2014, Moscow has been undermining the logic and letter of the Nuclear Non-Proliferation Treaty (NPT) with its nuclear posturing.

Ukrainian President Volodymyr Zelensky said Friday that North Korean soldiers "have been brought in again" to Russia's Kursk region after reports that the troops had been pulled from the front due

North Korean ballistic missiles fired at Ukraine by Russian forces since late December have been far more precise than salvos of the weapons launched over the past year, two senior Ukrainian sources told Reuters.

Ukrainian President Volodymyr Zelensky said during his Friday evening address: "New assaults took place in the areas of the Kursk operation—the Russian army with North Korean soldiers brought in again. A significant number of occupiers have been eliminated, we're talking hundreds of Russian and North Korean servicemen."

Ukraine is ready to hand over to South Korea any captured North Korean soldiers detained by Ukrainian forces in Russia’s Kursk region, Ambassador Dmytro Ponomarenko told The Korean Times in an interview published on Thursday.

A Ukrainian news outlet has published a video showing the capture of a North Korean soldier, as South Korea's spy agency said Kim Jong Un has pulled troops from Russia's Kursk region. Newsweek has contacted the Russia's Foreign Ministry for comment.