The South Korean warning about weapons comes on the same day as North Korea, through its representative in the UN, denies the allegations about North Korean soldiers in Russia. Russia has also denied North Korean involvement.
Claims from South Korea – whose intelligence service NIS has flagged that North Korea has decided to send 12,000 soldiers, including special forces – are according to the North Korean representative "groundless rumors".
Even dictator Kim Jong-Un's powerful sister Kim Yo-Jong denies the allegations and calls both South Korea and Ukraine "madmen" making "reckless statements against nuclear states".
Ukraine's President Volodymyr Zelenskyj, on the other hand, has said that there is clear evidence that North Korea has sent soldiers to Russia, and points to satellite images and video clips that allegedly show how 1,500 North Korean soldiers have already been sent to Russian Vladivostok.
Pyongyang and Moscow have been allies since North Korea was founded after World War II, and have come even closer to each other after Russia's full-scale invasion of Ukraine in 2022.
North Korea has previously delivered large quantities of weapons to Russia.
